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@article{DAN_1957_117_1_a1, author = {I. A. Bakhtin}, title = {On a class of equations with positive operators}, journal = {Doklady Akademii Nauk}, pages = {13--16}, publisher = {mathdoc}, volume = {117}, number = {1}, year = {1957}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1957_117_1_a1/} }
I. A. Bakhtin. On a class of equations with positive operators. Doklady Akademii Nauk, Tome 117 (1957) no. 1, pp. 13-16. http://geodesic.mathdoc.fr/item/DAN_1957_117_1_a1/