New classes of certain analytic functions

Considering a function f(z) which is the extremal function for p-valently starlike of order a in the open unit disk, two new classes S-p*(m,alpha) and K-p(m, alpha) are introduced. The object of the present paper is to discuss some interesting problems of functions f (z) concerned with S-p* (m, alpha) and K-p (m, alpha).