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@article{DAN_1973_210_5_a5, author = {A. A. Kaplan}, title = {Characteristic properties of penalty functions}, journal = {Doklady Akademii Nauk}, pages = {1018--1021}, publisher = {mathdoc}, volume = {210}, number = {5}, year = {1973}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1973_210_5_a5/} }
A. A. Kaplan. Characteristic properties of penalty functions. Doklady Akademii Nauk, Tome 210 (1973) no. 5, pp. 1018-1021. http://geodesic.mathdoc.fr/item/DAN_1973_210_5_a5/