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@article{DE_1983_19_1_a24, author = {E. P. Eroshenkov}, title = {The spectrum of the {Bitsadze--Samarski{\v\i}} problem}, journal = {Differencialʹnye uravneni\^a}, pages = {169--171}, publisher = {mathdoc}, volume = {19}, number = {1}, year = {1983}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1983_19_1_a24/} }
E. P. Eroshenkov. The spectrum of the Bitsadze--Samarski{\v\i} problem. Differencialʹnye uravneniâ, Tome 19 (1983) no. 1, pp. 169-171. http://geodesic.mathdoc.fr/item/DE_1983_19_1_a24/