@article{1029000897, author = {Hedlund, James H.}, title = {Limits of nilpotent and quasinilpotent operators.}, journal = {Michigan Math. J.}, volume = {19}, number = {1}, year = {1972}, pages = { 249-255}, language = {en}, url = {http://dml.mathdoc.fr/item/1029000897} }
Hedlund, James H. Limits of nilpotent and quasinilpotent operators.. Michigan Math. J., Tome 19 (1972) no. 1, pp. 249-255. http://gdmltest.u-ga.fr/item/1029000897/