MATHEMATICAL AND COMPUTER MODELLING, cilt.54, ss.359-366, 2011 (SCI-Expanded, Scopus)
Let A be the class of functions f(z) with f(0) = 0 and f'(0) = 1 in the open unit disk U. For f(z) is an element of A, f(z) is said to be in the class A(beta(1), beta(2), beta(3); lambda) if it satisfies