TY - JOUR AU - M. Darus AU - Kh. al-Shaqsi TI - On harmonic univalent functions defined by a~generalized Ruscheweyh derivatives operator JO - Lobachevskii journal of mathematics PY - 2006 SP - 19 EP - 26 VL - 22 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/LJM_2006_22_a2/ LA - en ID - LJM_2006_22_a2 ER -