@article{1102971070,
author = {Herstein, I. N. and Small, Lance W.},
title = {Regular elements in ${\rm P}.{\rm I}.$-rings.},
journal = {Pacific J. Math.},
volume = {39},
number = {3},
year = {1971},
pages = { 327-330},
language = {en},
url = {http://dml.mathdoc.fr/item/1102971070}
}
Herstein, I. N.; Small, Lance W. Regular elements in ${\rm P}.{\rm I}.$-rings.. Pacific J. Math., Tome 39 (1971) no. 3, pp. 327-330. http://gdmltest.u-ga.fr/item/1102971070/