@article{05282521, title = {About some linear operators.}, journal = {International Journal of Mathematics and Mathematical Sciences}, volume = {2007}, year = {2007}, doi = {10.1155/2007/91781}, zbl = {1153.41005}, language = {en}, url = {http://dml.mathdoc.fr/item/05282521} }
Pop, Ovidiu T. About some linear operators.. International Journal of Mathematics and Mathematical Sciences, Tome 2007 (2007) . doi : 10.1155/2007/91781. http://gdmltest.u-ga.fr/item/05282521/