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@article{DE_1984_20_3_a14, author = {V. S. Klimov}, title = {Lower bounds for the number of solutions of some boundary value problems}, journal = {Differencialʹnye uravneni\^a}, pages = {481--489}, publisher = {mathdoc}, volume = {20}, number = {3}, year = {1984}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1984_20_3_a14/} }
V. S. Klimov. Lower bounds for the number of solutions of some boundary value problems. Differencialʹnye uravneniâ, Tome 20 (1984) no. 3, pp. 481-489. http://geodesic.mathdoc.fr/item/DE_1984_20_3_a14/