HONAM MATHEMATICAL JOURNAL, cilt.42, sa.2, ss.377-389, 2020 (ESCI)
In this paper, we are mainly interested to find sufficient conditions for the convolution operator Y(lambda,mu)f(z) = zW(lambda,mu)(z) * f(z) belonging to the classes UCV (k, alpha), S-p (k, alpha), S*(sigma) and C-sigma.