@article{1102636169,
author = {Laursen, K. B.},
title = {Operators with finite ascent.},
journal = {Pacific J. Math.},
volume = {156},
number = {2},
year = {1992},
pages = { 323-336},
language = {en},
url = {http://dml.mathdoc.fr/item/1102636169}
}
Laursen, K. B. Operators with finite ascent.. Pacific J. Math., Tome 156 (1992) no. 2, pp. 323-336. http://gdmltest.u-ga.fr/item/1102636169/