@article{03923467, title = {An operator inequality.}, journal = {International Journal of Mathematics and Mathematical Sciences}, volume = {7}, year = {1984}, pages = {205-207}, doi = {10.1155/S0161171284000223}, zbl = {0577.47002}, language = {en}, url = {http://dml.mathdoc.fr/item/03923467} }
Siafarikas, P.D. An operator inequality.. International Journal of Mathematics and Mathematical Sciences, Tome 7 (1984) pp. 205-207. doi : 10.1155/S0161171284000223. http://gdmltest.u-ga.fr/item/03923467/