L. Pontrjagin, “Hermitian ореrators in spaces with indefinite metric”, Izv. Math., 8:6 (1944)

This publication is cited in the following 35 articles:

V. I. Voititskii, N. D. Kopachevskii, “O normalnykh kolebaniyakh mayatnika s polostyu, chastichno zapolnennoi idealnoi neszhimaemoi zhidkostyu”, Materialy Voronezhskoi vesennei matematicheskoi shkoly «Sovremennye metody teorii kraevykh zadach. Pontryaginskie chteniya–XXX». Voronezh, 3–9 maya 2019 g. Chast 1, Itogi nauki i tekhn. Sovrem. mat. i ee pril. Temat. obz., 190, VINITI RAN, M., 2021, 34–49
E. V. Kissin, V. S. Shulman, “O predstavleniyakh grupp i algebr v prostranstvakh s indefinitnoi metrikoi”, Posvyaschaetsya pamyati professora N.D. Kopachevskogo, SMFN, 67, no. 2, Rossiiskii universitet druzhby narodov, M., 2021, 295–315
V. I. Voititskii, N. D. Kopachevskii, “O malykh kolebaniyakh trekh sochlenennykh mayatnikov s polostyami, zapolnennymi odnorodnymi idealnymi zhidkostyami”, Sib. elektron. matem. izv., 17 (2020), 260–299
A. R. Yakubova, “O spektralnykh i evolyutsionnykh zadachakh, porozhdennykh polutoralineinoi formoi”, Trudy Krymskoi osennei matematicheskoi shkoly-simpoziuma, SMFN, 66, no. 2, Rossiiskii universitet druzhby narodov, M., 2020, 335–371
N. D. Kopachevskii, V. I. Voititskii, “O kolebaniyakh sochlenennykh mayatnikov s polostyami, zapolnennymi odnorodnymi zhidkostyami”, Trudy Krymskoi osennei matematicheskoi shkoly-simpoziuma, SMFN, 65, no. 3, Rossiiskii universitet druzhby narodov, M., 2019, 434–512
K. A. Radomirskaya, “Spektralnye i nachalno-kraevye zadachi sopryazheniya”, Trudy Krymskoi osennei matematicheskoi shkoly-simpoziuma, SMFN, 63, no. 2, Rossiiskii universitet druzhby narodov, M., 2017, 316–339
A. Sh. Shukurov, “On the number of non-real eigenvalues of the Sturm–Liouville problem”, Eurasian Math. J., 8:3 (2017), 77–84
P. G. Grinevich, S. P. Novikov, “Singular solitons and spectral meromorphy”, Russian Math. Surveys, 72:6 (2017), 1083–1107
N. D. Kopachevskii, V. I. Voititskii, Z. Z. Sitshaeva, “O kolebaniyakh dvukh sochlenennykh mayatnikov, soderzhaschikh polosti, chastichno zapolnennye neszhimaemoi zhidkostyu”, Differentsialnye i funktsionalno-differentsialnye uravneniya, SMFN, 63, no. 4, Rossiiskii universitet druzhby narodov, M., 2017, 627–677
M. V. Ahramovich, M. A. Muratov, V. S. Shulman, “Fuglede–Putnam Theorem in Algebras with Involutions”, Math. Notes, 98:4 (2015), 537–549
V. A. Khatskevich, V. A. Senderov, “Operator linear-fractional relations: main properties and applications”, Journal of Mathematical Sciences, 202:5 (2014), 667–683
E. I. Batyr, N. D. Kopachevsky, “Small motions and normal oscillations in systems of connected gyrostats”, Journal of Mathematical Sciences, 211:4 (2015), 441–530
S. G. Pyatkov, “On the existence of maximal semidefinite invariant subspaces for $J$ -dissipative operators”, Sb. Math., 203:2 (2012), 234–256
Yu. F. Dolgii, D. S. Bykov, “Lineinye funktsionalno-differentsialnye uravneniya v prostranstve s neindefinitnoi metrikoi”, Izv. IMI UdGU, 2012, no. 1(39), 48–49
R. S. Ismagilov, Sh. Sh. Sultanov, “Differential Operators Symmetric with Respect to an Indefinite Metric”, Math. Notes, 89:6 (2011), 810–818
V. V. Kozlov, “Problem of stability of two-link trajectories in a multidimensional Birkhoff billiard”, Proc. Steklov Inst. Math., 273 (2011), 196–213
Aliev Z.S., “Bazisnye svoistva v prostranstve $L_p$ sistem kornevykh funktsii odnoi spektralnoi zadachi so spektralnym parametrom v granichnom uslovii”, Differentsialnye uravneniya, 47:6 (2011), 764–775
V. V. Kozlov, “Spectral properties of operators with polynomial invariants in real finite-dimensional spaces”, Proc. Steklov Inst. Math., 268 (2010), 148–160
P. G. Grinevich, S. P. Novikov, “Singular finite-gap operators and indefinite metrics”, Russian Math. Surveys, 64:4 (2009), 625–650
T. Ya. Azizov, M. V. Chugunova, “Pontryagin's Theorem and Spectral Stability Analysis of Solitons”, Math. Notes, 86:5 (2009), 612–624