@article{1256049502,
author = {Radjabalipour, M.},
title = {Ranges of hyponormal operators},
journal = {Illinois J. Math.},
volume = {21},
number = {4},
year = {1977},
pages = { 70-75},
language = {en},
url = {http://dml.mathdoc.fr/item/1256049502}
}
Radjabalipour, M. Ranges of hyponormal operators. Illinois J. Math., Tome 21 (1977) no. 4, pp. 70-75. http://gdmltest.u-ga.fr/item/1256049502/