@article{1029000272,
author = {Berberian, S. K.},
title = {An extension of Weyl's theorem to a class of not necessarily normal operators.},
journal = {Michigan Math. J.},
volume = {16},
number = {1},
year = {1969},
pages = { 273-279},
language = {en},
url = {http://dml.mathdoc.fr/item/1029000272}
}
Berberian, S. K. An extension of Weyl's theorem to a class of not necessarily normal operators.. Michigan Math. J., Tome 16 (1969) no. 1, pp. 273-279. http://gdmltest.u-ga.fr/item/1029000272/