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Publications in Math-Net.Ru |
Citations |
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1978 |
1. |
Ya. N. Gaborak, I. F. Kushnirchuk, M. I. Ponyuk, “Equivalence of third order differential operators with a regular singular point”, Sibirsk. Mat. Zh., 19:6 (1978), 1254–1259 ; Siberian Math. J., 19:6 (1978), 882–886 |
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1977 |
2. |
I. F. Kushnirchuk, “Necessary and sufficient conditions for the equivalence of differential operators with a regular singular point”, Sibirsk. Mat. Zh., 18:2 (1977), 340–347 ; Siberian Math. J., 18:2 (1977), 244–249 |
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1976 |
3. |
I. F. Kushnirchuk, K. M. Fishman, “On the question of the similarity of quasitriangular matrices in the space of analytic functions in the disc”, Izv. Vyssh. Uchebn. Zaved. Mat., 1976, no. 8, 42–51 ; Soviet Math. (Iz. VUZ), 20:8 (1976), 33–40 |
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1975 |
4. |
I. I. Ibragimov, I. F. Kushnirchuk, “On the completeness of the system of eigenfunctions of a class of partial differential operators”, Dokl. Akad. Nauk SSSR, 222:5 (1975), 1020–1023 |
5. |
I. F. Kushnirchuk, N. I. Nagnibida, “Completeness, and the property of being a basis, of the solutions of a certain differential equation in analytic spaces”, Differ. Uravn., 11:7 (1975), 1217–1224 |
6. |
I. F. Kushnirchuk, N. I. Nagnibida, “The completeness, in analytic spaces in the disc, of the systems of eigenfunctions of linear ordinary differential operators”, Differ. Uravn., 11:5 (1975), 924–927 |
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1974 |
7. |
I. I. Ibragimov, I. F. Kushnirchuk, “On completeness of systems of cylinder functions in analytic spaces”, Dokl. Akad. Nauk SSSR, 214:4 (1974), 758–760 |
8. |
I. I. Ibragimov, I. F. Kushnirchuk, “On the equivalence of Bessel and Euler operators in spaces of functions analytic in a disk”, Dokl. Akad. Nauk SSSR, 214:1 (1974), 33–36 |
9. |
I. F. Kushnirchuk, N. I. Nagnibida, K. M. Fishman, “Equivalence of differential operators with a regular singular point”, Funktsional. Anal. i Prilozhen., 8:2 (1974), 83–84 ; Funct. Anal. Appl., 8:2 (1974), 169–171 |
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1973 |
10. |
I. F. Kushnirchuk, N. I. Nagnibida, “The connection of certain bases in an analytic space”, Sibirsk. Mat. Zh., 14:4 (1973), 889–894 ; Siberian Math. J., 14:4 (1973), 620–624 |
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1964 |
11. |
I. F. Kushnirchuk, “The Cauchy problem for a partial differential equation of $n$th order”, Sibirsk. Mat. Zh., 5:5 (1964), 1061–1070 |
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1962 |
12. |
I. F. Kushnirchuk, “On a partial differential equation of higher order”, Dokl. Akad. Nauk SSSR, 145:4 (1962), 727–730 |
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