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@article{MZM_1995_58_5_a14, author = {I. A. Sheipak}, title = {The eigenfunction system of a~hydrodynamical problem is a {Riesz} basis}, journal = {Matemati\v{c}eskie zametki}, pages = {790--793}, publisher = {mathdoc}, volume = {58}, number = {5}, year = {1995}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MZM_1995_58_5_a14/} }
I. A. Sheipak. The eigenfunction system of a~hydrodynamical problem is a Riesz basis. Matematičeskie zametki, Tome 58 (1995) no. 5, pp. 790-793. http://geodesic.mathdoc.fr/item/MZM_1995_58_5_a14/