TY - JOUR AU - M. F. Kotsur TI - Bounds of starlikeness and convexity for certain special classes of analytic functions in the disc JO - Izvestiâ vysših učebnyh zavedenij. Matematika PY - 1977 SP - 57 EP - 60 IS - 7 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/IVM_1977_7_a7/ LA - ru ID - IVM_1977_7_a7 ER -