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@article{IVM_1996_8_a2, author = {F. N. Garif'yanov}, title = {Transformations of biorthogonal systems, and some of their applications. {II}}, journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika}, pages = {13--24}, publisher = {mathdoc}, number = {8}, year = {1996}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/IVM_1996_8_a2/} }
F. N. Garif'yanov. Transformations of biorthogonal systems, and some of their applications. II. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 8 (1996), pp. 13-24. http://geodesic.mathdoc.fr/item/IVM_1996_8_a2/