@article{1077378810, author = {Douglas, R. G. and Pearcy, Carl}, title = {A note on quasitriangular operators}, journal = {Duke Math. J.}, volume = {37}, number = {1}, year = {1970}, pages = { 177-188}, language = {en}, url = {http://dml.mathdoc.fr/item/1077378810} }
Douglas, R. G.; Pearcy, Carl. A note on quasitriangular operators. Duke Math. J., Tome 37 (1970) no. 1, pp. 177-188. http://gdmltest.u-ga.fr/item/1077378810/