Complex analysis - Proc. 5th Rom.-Finn. Semin., Bucharest 1981, Part 1, Lect. Notes Math. 1013, 362-372 (1983).
[For the entire collection see Zbl 0516.00016.]
This paper is concerned with the classes f is holomorphic in the unit disk U, and for , , where and . Using subordination techniques the sharp result is obtaind that where and From a corollary it is noted that for , all functions in are starlike for n a nonnegative integer and convex for n a positive integer. The author also obtains coefficients bounds that generalize a result of H. Silverman and E. M. Silvia [Rocky Mt. J. Math. 10, 469-474 (1980; Zbl 0455.30011)].