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@article{DAN_1970_194_1_a1, author = {K. I. Babenko}, title = {Some questions in the theory of extremal problems of univalent functions of class~$S$}, journal = {Doklady Akademii Nauk}, pages = {12--15}, publisher = {mathdoc}, volume = {194}, number = {1}, year = {1970}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1970_194_1_a1/} }
K. I. Babenko. Some questions in the theory of extremal problems of univalent functions of class~$S$. Doklady Akademii Nauk, Tome 194 (1970) no. 1, pp. 12-15. http://geodesic.mathdoc.fr/item/DAN_1970_194_1_a1/