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@article{DAN_1980_253_4_a9, author = {M. J. Mardanov}, title = {On optimality conditions for singular equations}, journal = {Doklady Akademii Nauk}, pages = {815--818}, publisher = {mathdoc}, volume = {253}, number = {4}, year = {1980}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1980_253_4_a9/} }
M. J. Mardanov. On optimality conditions for singular equations. Doklady Akademii Nauk, Tome 253 (1980) no. 4, pp. 815-818. http://geodesic.mathdoc.fr/item/DAN_1980_253_4_a9/