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@article{DE_1999_35_4_a8, author = {A. M. Sedletskii}, title = {Bases that occur in the solution of equations of mixed type}, journal = {Differencialʹnye uravneni\^a}, pages = {507--515}, publisher = {mathdoc}, volume = {35}, number = {4}, year = {1999}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1999_35_4_a8/} }
A. M. Sedletskii. Bases that occur in the solution of equations of mixed type. Differencialʹnye uravneniâ, Tome 35 (1999) no. 4, pp. 507-515. http://geodesic.mathdoc.fr/item/DE_1999_35_4_a8/