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@article{DE_2006_42_2_a15, author = {A. Ya. Lepin and V. D. Ponomarev}, title = {On a positive solution of a three-point boundary value problem}, journal = {Differencialʹnye uravneni\^a}, pages = {272--274}, publisher = {mathdoc}, volume = {42}, number = {2}, year = {2006}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_2006_42_2_a15/} }
A. Ya. Lepin; V. D. Ponomarev. On a positive solution of a three-point boundary value problem. Differencialʹnye uravneniâ, Tome 42 (2006) no. 2, pp. 272-274. http://geodesic.mathdoc.fr/item/DE_2006_42_2_a15/