A. V. Lutsenko, I. Kh. Musin, R. S. Yulmukhametov, “Description of the Duals of Subspaces of Infinitely Differentiable Functions”, Journal of Mathematical Sciences, 279:4 (2024), 478–492
K. P. Isaev, R. S. Yulmukhametov, “On a Scale of Banach Spaces of Analytic Functions on a Convex Domain”, Lobachevskii Journal of Mathematics, 45:6 (2024), 2688–2697
3.
K. P. Isaev, R. S. Yulmukhametov, “Borel transforms of functions in parametrized family of Hilbert spaces”, Ufa Math. J., 16:4 (2024), 21–39
2023
4.
K. P. Isaev, R. S. Yulmukhametov, “On a criterion for the existence of unconditional bases of reproducing kernels in Fock spaces with radial regular weight”, Journal of Mathematical Analysis and Applications, 519:2 (2023), 126839 , 17 pp.
K. P. Isaev, A. V. Lutsenko, R. S. Yulmukhametov, “Entire Functions of Sine Type for Convex Apeirogons”, Lobachevskii Journal of Mathematics, 44:5 (2023), 1847–1853
6.
K. P. Isaev, A. V. Lutsenko, R. S. Yulmukhametov, “On a sufficient condition for the existence of unconditional bases of reproducing kernels in Fock type spaces with nonradial weights”, Analysis and Mathematical Physics, 13:6 (2023), 83 , 11 pp.
A. V. Lutsenko, I. Kh. Musin, R. S. Yulmukhametov, “On Gelfand–Shilov spaces”, Ufa Math. J., 15:3 (2023), 88–96
2022
8.
K. P. Isaev, R. S. Yulmukhametov, “Unconditional bases in radial Hilbert spaces”, Izv. Math., 86:1 (2022), 150–168
9.
K. P. Isaev, R. S. Yulmukhametov, “Riesz bases of normalized reproducing kernels in Fock type spaces”, Analysis and Mathematical Physics, 12:1 (2022), 11 , 16 pp.
K. P. Isaev, A. V. Lutsenko, R. S. Yulmukhametov, “Unconditional bases of reproducing kernels for Fock spaces with nonradial weights”, Journal of Mathematical Sciences, 260:6 (2022), 748–756
11.
A. V. Lutsenko, I. Kh. Musin, R. S. Yulmukhametov, “On a class of periodic functions in $\mathbb{R}^n$”, Ufa Math. J., 14:4 (2022), 69–75
2021
12.
K. P. Isaev, R. S. Yulmukhametov, “On a sufficient condition for the existence of unconditional bases of reproducing kernels in Hilbert spaces of entire functions”, Lobachevskii Journal of Mathematics, 42:6 (2021), 1154–1165
K. P. Isaev, A. V. Lutsenko, R. S. Yulmukhametov, “Necessary condition for the existence of unconditional bases of reproducing kernels for Hilbert spaces of entire functions”, Journal of Mathematical Sciences, 257:5 (2021), 662–672
14.
K. P. Isaev, R. S. Yulmukhametov, “Equivalent conditions for the existence of unconditional bases of reproducing kernels in spaces of entire functions”, Problemy Analiza - Issues of Analysis, 10 (28):3 (2021), 41–52
R. S. Yulmukhametov, “Dual spaces for weighted spaces of locally integrable functions”, Ufa Math. J., 13:4 (2021), 112–122
2020
16.
K. P. Isaev, K. V. Trunov, R. S. Yulmukhametov, “Equivalent Norms in Hilbert Spaces with Unconditional Bases of Reproducing Kernels”, Journal of Mathematical Sciences, 250:2 (2020), 310–321
17.
K. P. Isaev, R. S. Yulmukhametov, “Bezuslovnye bazisy v radialnykh gilbertovykh prostranstvakh”, Vladikavkazskii matematicheskii zhurnal, 22:3 (2020), 85–99
K. P. Isaev, R. S. Yulmukhametov, “Geometry of radial Hilbert spaces with unconditional bases of reproducing kernels”, Ufa Math. J., 12:4 (2020), 55–63
19.
V. E. Adler, P. Winternitz, R. N. Garifullin, A. V. Zhiber, D. Levi, A. V. Mikhailov, I. Kh. Musin, F. W. Nijhoff, V. V. Sokolov, B. I. Suleimanov, E. V. Ferapontov, A. P. Fordy, I. T. Habibullin, I. Yu. Cherdantsev, R. A. Sharipov, R. S. Yulmukhametov, “In memory of Yamilov Ravil Islamovich”, Ufa Math. J., 12:3 (2020), 119–120
2019
20.
K. P. Isaev, K. V. Trounov, R. S. Yulmukhametov, “Representing systems of exponentials in projective limits of weighted subspaces of $H(D)$”, Izv. Math., 83:2 (2019), 232–250
21.
Isaev, K.P., Trounov, K.V. & Yulmukhametov, R.S., “On representation of functions from normed subspaces of H(D) by series of exponentials”, Analysis and Mathematical Physics, 9:3 (2019), 1043-1067
K. P. Isaev, K. V. Trunov, R. S. Yulmukhametov, “Representation of functions by series of exponentials in normed subspaces of $A^\infty (D)$”, Journal of Mathematical Sciences, 257:3 (2021), 313–328
2019
23.
K. P. Isaev, R. S. Yulmukhametov, “On Hilbert spaces of entire functions with unconditional bases of reproducing kernels”, Lobachevskii Journal of Mathematics, 40:9 (2019), 1283–1294
K. P. Isaev, A. V. Lutsenko and R. S. Yulmukhametov, “Unconditional bases in weakly weighted spaces of entire functions”, St. Petersburg Math. J., 30:2 (2019), 253–265
2018
25.
K. P. Isaev, R. C. Yulmukhaetov, “Predstavlyayuschie sistemy eksponent v vesovykh podprostranstvakh H(D)”, Sovremennye metody teorii kraevykh zadach: materialy mezhdunarodnoi konferentsii, posvyaschennoi 90-letiyu Vladimira Aleksandrovicha Ilina, (Pontryaginskie chteniya – XXIX) (Moskva, 2–6 maya 2018 g.), MAKS Press, Moskva, 2018, 110–111
26.
K. P. Isaev, R. S. Yulmukhametov, “Representing systems of exponentials in locally convex subspaces of the normed space of analytic functions”, Kompleksnyi analiz i ego prilozheniya: Materialy Mezhdunarodnoi shkoly-konferentsii (Gelendzhik, 02–09 iyunya 2018 g.), Kubanskii gosudarstvennyi universitet, Krasnodar, 2018, 53
2021
27.
R. A. Bashmakov, K. P. Isaev, R. S. Yulmukhametov, “Representing systems of exponents in weight subspaces H (D)”, Journal of Mathematical Sciences, 252:3 (2021), 302–318
2018
28.
N. F. Abuzyarova, K. P. Isaev, R. S. Yulmukhametov, “Equivalence of norms of analytical functions on exterior of convex domain”, Ufa Math. J., 10:4 (2018), 3–11
2019
29.
K. P. Isaev, A. V. Lutsenko, R. S. Yulmukhametov, “Generating functions for bases in Hilbert spaces of entire functions”, Journal of Mathematical Sciences, 241:6 (2019), 718–726
2017
30.
K. P. Isaev, R. S. Yulmukhametov, “O bezuslovnykh bazisakh iz vosproizvodyaschikh yader v slabovesovykh prostranstvakh tipa Foka”, Mezhdunarodnaya matematicheskaya konferentsiya po teorii funktsii, posvyaschënnaya 100-letiyu chl.-korr. AN SSSR A.F. Leonteva. Sbornik tezisov (Ufa, 24–27 maya 2017 g.), RITs BashGU, Ufa, 2017, 70–72
31.
K. P. Isaev, R. S. Yulmukhametov, “Bazisy Rissa iz normirovannykh vosproizvodyaschikh yader v prostranstvakh tipa Foka s neradialnym vesom”, Mezhdunarodnaya matematicheskaya konferentsiya po teorii funktsii, posvyaschënnaya 100-letiyu chl.-korr. AN SSSR A.F. Leonteva. Sbornik tezisov (Ufa, 24–27 maya 2017 g.), RITs BashGU, Ufa, 2017, 72–74
32.
K. P. Isaev, A. V. Lutsenko, R. S. Yulmukhametov, “O bazisakh Rissa iz normirovannykh eksponent v slabovesovykh prostranstvakh na otrezke”, Sovremennaya matematika i ee prilozheniya, Materialy mezhdunarodnoi nauchno-prakticheskoi konferentsii. Chast 1. (Sterlitamak, 18–20 maya 2017 g.), Bashkirskii gosudarstvennyi universitet, Sterlitamakskii filial, Sterlitamak, 2017, 383–387
33.
K. P. Isaev, A. V. Lutsenko, R. S. Yulmukhametov, “O porozhdayuschikh funktsiyakh bazisov iz eksponent i iz znachenii vosproizvodyaschego yadra”, Teoriya funktsii, ee prilozheniya i smezhnye voprosy. Materialy Trinadtsatoi mezhdunarodnoi Kazanskoi letnei nauchnoi shkoly-konferentsii (Kazan, 21–27 avgusta 2017 g.), Trudy matematicheskogo tsentra imeni N.I. Lobachevskogo, 54, Kazanskoe matematicheskoe obschestvo, Kazan, 2017, 162–166
34.
R. S. Yulmukhametov, “Bazisy Rissa iz normirovannykh vosproizvodyaschikh yader v prostranstvakh s neradialnym vesom”, Sovremennye metody v teorii obratnykh zadach i smezhnye voprosy: tezisy dokladov Vserossiiskoi nauchnoi konferentsii (Teberda, 20–23 sentyabrya 2017 g.), YuMI VNTs RAN, Vladikavkaz, 2017, 21–22
35.
K. P. Isaev, K. V. Trounov, R. S. Yulmukhametov, “Representation of functions in locally convex subspaces of $A^\infty (D)$ by series of exponentials”, Ufa Math. Journal, 9:3 (2017), 48–60
36.
K. P. Isaev, R. S. Yulmukhametov, “On Unconditional Bases of Reproducing Kernels in Fock Type Spaces”, Funct. Anal. Appl., 51:4 (2017), 283–292
2016
37.
R. S. Yulmukhametov, A. A. Yunusov, “O bezuslovnykh bazisakh iz eksponent v vesovykh prostranstvakh na intervale veschestvennoi osi s ogranicheniyami na porozhdayuschuyu funktsiyu”, Ufimskaya mezhdunarodnaya matematicheskaya konferentsiya: sbornik tezisov (Ufa, 27 – 30 sentyabrya 2016 g.), eds. R. N. Garifullin, Ufa: RITs BashGU, 2016, 198-199
38.
K. P. Isaev, A. V. Lutsenko, R. S. Yulmukhametov, “On unconditional exponential bases in weak weighted spaces on segment”, Ufa Math. Journal, 8:4 (2016), 88–97
39.
K. P. Isaev, R. S. Yulmukhametov, “O bezuslovnykh bazisakh iz eksponent v vesovykh prostranstvakh na intervale veschestvennoi osi”, Materialy mezhdunarodnoi konferentsii po algebre, analizu i geometrii, posvyaschennoi yubileyam vydayuschikhsya professorov Kazanskogo universiteta, matematikov Petra Alekseevicha (1895-1944) i Aleksandra Petrovicha (1926-1998) Shirokovykh (26 iyunya – 2 iyulya 2016 g., Kazan), Kazanskii (Privolzhskii) federalnyi universitet, 2016, 187–188
2017
40.
K. P. Isaev, R. S. Yulmukhametov, A. A. Yunusov, “On unconditional exponential bases in weighted spaces on interval of real axis”, St. Petersburg Math. J., 28:5 (2017), 689–706
2016
41.
R. A. Bashmakov, A. A. Makhota, R. S. Yulmukhametov, “O polnote sistem eksponent po nulyam funktsii tipa sinusa”, Vestnik Bashkirskogo universiteta, 21:4 (2016), 864–871
2015
42.
K. P. Isaev, R. S. Yulmukhametov, A. A. Yunusov, “O bezuslovnykh bazisakh iz eksponent v vesovykh prostranstvakh na veschestvennoi osi”, Teoriya funktsii, ee prilozheniya i smezhnye voprosy. Materialy Dvenadtsatoi mezhdunarodnoi Kazanskoi letnei nauchnoi shkoly-konferentsii (Kazan, 27 iyunya – 4 iyulya 2015 g.), Trudy matematicheskogo tsentra imeni N.I. Lobachevskogo, 51, Kazanskoe matematicheskoe obschestvo, 2015, 210–212
43.
R. S. Yulmukhametov, K. P. Isaev, A. A. Yunusov, “O porozhdayuschikh funktsiyakh bezuslovnykh bazisov iz eksponent v vesovykh prostranstvakh na veschestvennoi osi”, Kompleksnyi analiz i ego prilozheniya. Materialy mezhdunarodnoi nauchno-prakticheskoi konferentsii (Bryansk, 16-19 iyunya 2015 g), Bryanskii gosudarstvennyi universitet im. ak. I.G. Petrovskogo, Bryansk, 2015, 64–66
44.
R. S. Yulmukhametov, K. P. Isaev, A. A. Yunusov, “O bezuslovnykh bazisakh iz eksponent v vesovykh prostranstvakh na veschestvennoi osi so stepennymi otsenkami porozhdayuschei funktsii”, Spektralnye zadachi, nelineinyi i kompleksnyi analiz. Sbornik tezisov mezhdunarodnoi nauchnoi konferentsii (Ufa, 01-03 oktyabrya 2015 g.), eds. Fazullin Z.Yu., Bashkirskii gosudarstvennyi universitet, Ufa, 2015, 157–159
2014
45.
K. P. Isaev, R. S. Yulmukhametov, A. A. Yunusov, “Entire functions with fine asymptotic estimates for convex functions”, Ufa Math. Journal, 6:2 (2014), 35–43
46.
K. P. Isaev, R. S. Yulmukhametov, A. A. Yunusov, “Ob approksimatsii vypukloi funktsii logarifmom modulya tseloi funktsii”, Materialy mezhdunarodnoi nauchnoi konferentsii «Spektralnye zadachi, nelineinyi i kompleksnyi analiz» (Ufa, 24- -26 sentyabrya 2014 g.), Ufa: RITs BashGU, 2014, 37–38
2013
47.
K. P. Isaev, R. S. Yulmukhametov, “Unconditional bases of reproducing kernels in Hilbert spaces of entire functions”, Ufa Math. Journal, 5:3 (2013), 67–76
48.
K. P. Isaev, R. S. Yulmukhametov, “O bezuslovnykh bazisakh iz vosproizvodyaschikh yader v funktsionalnykh gilbertovykh prostranstvakh tselykh funktsii”, Tezisy Mezhdunarodnoi nauchnoi konferentsii «Nelineinyi analiz i spektralnye zadachi» (Ufa, 18–22 iyunya 2013 g.), Ufa: RITs BashGU, 2013, 54–56
49.
K. P. Isaev, R. S. Yulmukhametov, “Bezuslovnye bazisy iz vosproizvodyaschikh yader v gilbertovykh prostranstvakh tselykh funktsii”, Teoriya funktsii, ee prilozheniya i smezhnye voprosy. Materialy Odinnadtsatoi mezhdunarodnoi Kazanskoi letnei nauchnoi shkoly-konferentsii (Kazan, 22–28 avgusta 2013g), Trudy matematicheskogo tsentra imeni N.I. Lobachevskogo, 46, Kazanskii (Privolzhskii) federalnyi universitet, Kazan, 2013, 216-217
2011
50.
K. P. Isaev, R. S. Yulmukhametov, “Unconditional exponential bases in Hilbert spaces”, Ufa Math. Journal, 3:1 (2011), 3–15
51.
R. A. Bashmakov, A. A. Putintseva, R. C. Yulmukhametov, “Entire functions of sine type and their applications”, St. Petersburg Math. J., 22:5 (2011), 737–750
2010
52.
V. I. Lutsenko, R. S. Yulmukhametov, “On the accuracy of asymptotic approximation of subharmonic functions by the logarithm of the modulus of an entire function”, Ufimsk. Mat. Zh., 2:3 (2010), 46–53
53.
V. V. Napalkov, A. A. Rumyantseva, R. S. Yulmukhametov, “Completeness of exponential systems in weighted spaces on real axe”, Ufimsk. Mat. Zh., 2:1 (2010), 97–109
54.
R. A. Bashmakov, K. P. Isaev, R. S. Yulmukhametov, “On geometric characteristics of convex functions and Laplace integrals”, Ufimsk. Mat. Zh., 2:1 (2010), 3–16
55.
R. S. Yulmukhametov, “Spectral synthesis in the kernel of a convolution operator in weighted spaces”, St. Petersburg Math. J., 21:2 (2010), 353–363
2009
56.
K. P. Isaev, A. A. Putintseva, R. S. Yulmukhametov, “The representation by exponential series in weighted spaces on real axis”, Ufimsk. Mat. Zh., 1:1 (2009), 16–37
57.
V. V. Napalkov, A. A. Rumyantseva, R. S. Yulmukhametov, “Polnota sistem eksponent v vesovykh prostranstvakh na veschestvennoi osi”, Doklady Akademii nauk, 429:2 (2009), 155–158 , English transl.: Dokl. Math. (2009) 80: 810
K. V. Trounov, R. S. Yulmukhametov, “Quasi-analytic Carleman classes on bounded domains”, St. Petersburg Math. J., 20:2 (2009), 289–317
2008
59.
K. P. Isaev, A. A. Putintseva, R. S. Yulmukhametov, “Postroenie analiticheskikh v polose funktsii s zadannoi asimptotikoi”, Trudy Instituta matematiki s VTs UNTs RAN, 1, eds. chl.-korr. RAN, doktor fiziko-matematicheskikh nauk, professor V.V. Napalkov, Ufa: RIO BashGU, 2008, 100-108http://www.spsl.nsc.ru/FullText/konfe/TRUDY_INST_MATEM.pdf
60.
V. V. Napalkov, A. A. Rumyantseva, R. S. Yulmukhametov, “Ob usloviyakh polnoty sistemy eksponent v vesovom gilbertovom prostranstve na R”, Trudy Instituta matematiki s VTs UNTs RAN, 1, eds. chl.-korr. RAN, doktor fiziko-matematicheskikh nauk, professor V.V. Napalkov, Ufa: RIO BashGU, 2008, 173-184http://www.spsl.nsc.ru/FullText/konfe/TRUDY_INST_MATEM.pdf
61.
R. A. Bashmakov, R. S. Yulmukhametov, “Uslovie otsutstviya bazisov Rissa iz eksponent v prostranstvakh L2(I,exp h)”, Trudy Instituta matematiki s VTs UNTs RAN, 1, eds. chl.-korr. RAN, doktor fiziko-matematicheskikh nauk, professor V.V. Napalkov, Ufa: RIO BashGU, 2008, 17-27http://www.spsl.nsc.ru/FullText/konfe/TRUDY_INST_MATEM.pdf
2007
62.
K. P. Isaev, R. S. Yulmukhametov, “The absence of unconditional bases of exponentials in Bergman spaces on non-polygonal domains”, Izv. Math., 71:6 (2007), 1145–1166
63.
V. V. Napalkov, R. S. Yulmukhametov, “Polnota sistemy eksponent v prostranstve s vesom $exp (x^2)$”, Doklady Akademii nauk, 415:4 (2007), 455–457 , English transl.: Dokl. Math. (2007) 76:1, 580-582
V. V. Napalkov, R. A. Bashmakov, R. S. Yulmukhametov, “Asimptoticheskoe povedenie integralov Laplasa i geometricheskie kharakteristiki vypuklykh funktsii”, Doklady Akademii nauk, 413:1 (2007), 20–22 , English transl.: Dokl. Math. (2007) 75: 2, 190-192
V. I. Lutsenko, R. S. Yulmukhametov, “Opisanie funktsionalov dlya vesovykh prostranstv s radialnym vesom”, Vestnik UGATU. Seriya «Fundamentalnaya i prikladnaya matematika», 9:3(21) (2007), 104–110
66.
K. V. Trunov, R. S. Yulmukhametov, “Ob odnom svoistve klassov Karlemana na ogranichennykh oblastyakh”, Vestnik UGATU. Seriya «Fundamentalnaya i prikladnaya matematika», 9:3(21) (2007), 110–116
67.
R. S. Yulmukhametov, “Spektralnyi sintez v yadre operatora svertki v vesovykh prostranstvakh”, Vestnik UGATU. Seriya «Fundamentalnaya i prikladnaya matematika», 9:3(21) (2007), 116–125
2006
68.
V. V. Napalkov, K. V. Trounov, R. S. Yulmukhametov, “Boundary Uniqueness Theorems in the Carleman Classes and a Dirichlet Problem”, Proc. Steklov Inst. Math., 253 (2006), 115–122
69.
K. P. Isaev, R. S. Yulmukhametov, “Unconditional Exponential Bases in Bergman Spaces”, Proc. Steklov Inst. Math., 253 (2006), 78–89
2005
70.
V. V. Napalkov, K. V. Trounov, R. S. Yulmukhametov, “Uniqueness boundary theorems in the Carleman classes and the Dirichlet problem”, Doklady Mathematics, 72:2 (2005), 705–707
2004
71.
K. P. Isaev, R. S. Yulmukhametov, “Laplace transforms of functionals on Bergman spaces”, Izv. Math., 68:1 (2004), 3–41
2001
72.
R. S. Yulmukhametov, V. V. Napalkov, “On the Hilbert Transform in Bergman Space”, Math. Notes, 70:1 (2001), 61–70
73.
N. F. Abuzyarova, R. S. Yulmukhametov, “Duals to weighted spaces of analytic functions”, Siberian Math. J., 42:1 (2001), 1–14
1999
74.
R. S. Yulmukhametov, “Solution of the Ehrenpreis factorization problem”, Sb. Math., 190:4 (1999), 597–629
1998
75.
R. S. Yulmukhametov, “Entire Functions with Given Asymptotic Behavior”, Funct. Anal. Appl., 32:3 (1998), 183–191
76.
R. S. Yulmukhametov, “Reshenie problemy L. Eirenpraisa o faktorizatsii”, Doklady Akademii nauk, 360:1 (1998), 26–27 , English transl.: Dokl. Math. (1998) 57: 3, 350-351
V. I. Lutsenko and R. S. Youlmukhametov, “On entire functions with given asymptotic behavior”, Complex Variables, Theory and Application: An International Journal, 37:1–4 (1998), 413–423
1997
78.
R. S. Yulmukhametov, “Smooth regularization of plurisubharmonic functions”, Math. Notes, 62:2 (1997), 260–267
79.
R. S. Yulmukhametov, “Decomposition of entire functions into the product of two “almost equal” functions”, Siberian Math. J., 38:2 (1997), 401–410
1996
80.
R. S. Yulmukhametov, “Entire functions of several variables with given behaviour at infinity”, Izv. Math., 60:4 (1996), 857–876
81.
R. S. Yulmukhametov, “Representation of an entire function as a product of two functions of equivalent growth”, Sb. Math., 187:7 (1996), 1087–1107
82.
R. S. Yulmukhametov, “Reshenie problemy Eirenpraisa”, Vestnik BGU, 1996, no. 1, 11–17
1995
83.
R. S. Yulmukhametov, “Splitting entire functions with zeros in a strip”, Sb. Math., 186:7 (1995), 1071–1084
84.
V. V. Napalkov, R. S. Yulmukhametov, “On the Cauchy transform of functionals on a Bergman space”, Russian Acad. Sci. Sb. Math., 82:2 (1995), 327–336
1994
85.
V. V. Napalkov, R. S. Yulmukhametov, “Weighted Fourier–Laplace transforms of analytic functionals on the disk”, Russian Acad. Sci. Sb. Math., 77:2 (1994), 385–390
1993
86.
V. I. Lutsenko, R. S. Yulmukhametov, “A generalization of Wiener–Paley theorem to functionals in Smirnov spaces”, Proc. Steklov Inst. Math., 200 (1993), 271–280
1991
87.
R. S. Yulmukhametov, “Homogeneous convolution equations”, Dokl. Math., 43:1 (1991), 101–103
1990
88.
V. I. Lutsenko, R. S. Yulmukhametov, “Generalization of the Paley–Wiener theorem in weighted spaces”, Math. Notes, 48:5 (1990), 1131–1136
1987
89.
R. S. Yulmukhametov, “Asymptotics of the difference of subharmonic functions”, Math. Notes, 41:3 (1987), 199–204
1989
90.
R. S. Yulmukhametov, “Approximation of homogeneous subharmonic functions”, Math. USSR-Sb., 62:2 (1989), 507–523
1987
91.
R. S. Yulmukhametov, “Quasianalytical classes of functions in convex domains”, Math. USSR-Sb., 58:2 (1987), 505–523
1985
92.
R. S. Yulmukhametov, “Approksimatsiya subgarmonicheskikh funktsii”, Analysis Mathematica, 11:3 (1985), 257–282