@article{05036126, title = {A preserving property of generalized Libera integral operator.}, journal = {General Mathematics}, volume = {12}, year = {2004}, pages = {41-45}, zbl = {1100.30007}, language = {en}, url = {http://dml.mathdoc.fr/item/05036126} }
Acu, Mugur. A preserving property of generalized Libera integral operator.. General Mathematics, Tome 12 (2004) pp. 41-45. http://gdmltest.u-ga.fr/item/05036126/