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@article{IM2_1968_2_4_a0, author = {V. I. Gavrilov}, title = {Some classes of meromorphic functions characterized by their spherical derivative}, journal = {Izvestiya. Mathematics }, pages = {687--694}, publisher = {mathdoc}, volume = {2}, number = {4}, year = {1968}, language = {en}, url = {http://geodesic.mathdoc.fr/item/IM2_1968_2_4_a0/} }
V. I. Gavrilov. Some classes of meromorphic functions characterized by their spherical derivative. Izvestiya. Mathematics , Tome 2 (1968) no. 4, pp. 687-694. http://geodesic.mathdoc.fr/item/IM2_1968_2_4_a0/