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@article{DE_1987_23_4_a10, author = {Yu. V. Pokornyi and K. P. Lazarev}, title = {Some oscillation theorems for multipoint problems}, journal = {Differencialʹnye uravneni\^a}, pages = {658--670}, publisher = {mathdoc}, volume = {23}, number = {4}, year = {1987}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1987_23_4_a10/} }
Yu. V. Pokornyi; K. P. Lazarev. Some oscillation theorems for multipoint problems. Differencialʹnye uravneniâ, Tome 23 (1987) no. 4, pp. 658-670. http://geodesic.mathdoc.fr/item/DE_1987_23_4_a10/