@article{05313212, title = {On harmonic functions defined by derivative operator.}, journal = {Journal of Inequalities and Applications [electronic only]}, volume = {2008}, year = {2008}, doi = {10.1155/2008/263413}, zbl = {1149.31001}, language = {en}, url = {http://dml.mathdoc.fr/item/05313212} }
Al-Shaqsi, K.; Darus, M. On harmonic functions defined by derivative operator.. Journal of Inequalities and Applications [electronic only], Tome 2008 (2008) . doi : 10.1155/2008/263413. http://gdmltest.u-ga.fr/item/05313212/