... CorporationJournal of Inequalities and ApplicationsVolume 2009, Article ID 759251, 12 pagesdoi:10.1155/2009/759251Research ArticleCertain Classes of Harmonic Multivalent Functions Based on Hadamard ... CreativeCommons Attribution License, which permits unrestricted use, distribution, and reproduction inany medium, provided the original work is properly cited.1. IntroductionA continuous function f ... “Harmonic univalent functions with negative coefficients,” Journal of MathematicalAnalysis and Applications, vol. 220, no. 1, pp. 283–289, 1998.6 H. Silverman and E. M. Silvia, “Subclasses of...