For citations:
Rasulov T.Kh., Khalkhuzhaev A.M., Pardabaev M.A., Khayitova Kh.G. Expansions of eigenvalues of a discrete bilaplacian with two-dimensional perturbation. Izvestiya Vysshikh Uchebnykh Zavedenii. Matematika. 2024;(10):77-89. (In Russ.) https://doi.org/10.26907/0021-3446-2024-10-77-89
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