@article{05825789, title = {Quasinormality and numerical ranges of certain classes of dual Toeplitz operators.}, journal = {Abstract and Applied Analysis}, volume = {2010}, year = {2010}, doi = {10.1155/2010/426319}, zbl = {1206.47025}, language = {en}, url = {http://dml.mathdoc.fr/item/05825789} }
Guediri, Hocine. Quasinormality and numerical ranges of certain classes of dual Toeplitz operators.. Abstract and Applied Analysis, Tome 2010 (2010) . doi : 10.1155/2010/426319. http://gdmltest.u-ga.fr/item/05825789/