SCIENTIFIC WORLD JOURNAL, 2013 (SCI-Expanded)
We introduce and investigate an interesting subclass N P-Sigma(lambda,delta)(n, beta; h) of analytic and bi-univalent functions in the open unit disk U. For functions belonging to the class N P-Sigma(lambda,delta)(n,beta; h), we obtain estimates on the first two Taylor-Maclaurin coefficients vertical bar a(2)vertical bar and vertical bar a(3)vertical bar.