@article{00763842,
title = {On operators of Saphar type.},
journal = {Portugaliae Mathematica. Nova S\'erie},
volume = {51},
year = {1994},
pages = {617-628},
zbl = {0823.47003},
language = {en},
url = {http://dml.mathdoc.fr/item/00763842}
}
Schmoeger, Christoph. On operators of Saphar type.. Portugaliae Mathematica. Nova Série, Tome 51 (1994) pp. 617-628. http://gdmltest.u-ga.fr/item/00763842/