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@article{MZM_1979_25_5_a4, author = {M. F. Kotsur}, title = {Radii of starlikeness and convexity in certain classes of analytic functions in the disk}, journal = {Matemati\v{c}eskie zametki}, pages = {675--680}, publisher = {mathdoc}, volume = {25}, number = {5}, year = {1979}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MZM_1979_25_5_a4/} }
M. F. Kotsur. Radii of starlikeness and convexity in certain classes of analytic functions in the disk. Matematičeskie zametki, Tome 25 (1979) no. 5, pp. 675-680. http://geodesic.mathdoc.fr/item/MZM_1979_25_5_a4/