%0 Journal Article %A M. Darus %A Kh. al-Shaqsi %T On harmonic univalent functions defined by a~generalized Ruscheweyh derivatives operator %J Lobachevskii journal of mathematics %D 2006 %P 19-26 %V 22 %I mathdoc %U http://geodesic.mathdoc.fr/item/LJM_2006_22_a2/ %G en %F LJM_2006_22_a2