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@article{IVM_1974_4_a3, author = {Ya. I. Zabotin and A. I. Korablev}, title = {Pseudoconvex functionals, and their extremal properties}, journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika}, pages = {27--31}, publisher = {mathdoc}, number = {4}, year = {1974}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/IVM_1974_4_a3/} }
Ya. I. Zabotin; A. I. Korablev. Pseudoconvex functionals, and their extremal properties. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 4 (1974), pp. 27-31. http://geodesic.mathdoc.fr/item/IVM_1974_4_a3/