@article{05164009, title = {<title-group xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"><article-title xml:lang="en"><math><mi>P</mi></math>-clean rings.</article-title></title-group>}, journal = {International Journal of Mathematics and Mathematical Sciences}, volume = {2006}, year = {2006}, doi = {10.1155/IJMMS/2006/75247}, zbl = {1123.16021}, language = {en}, url = {http://dml.mathdoc.fr/item/05164009} }
Chen, Weixing.. International Journal of Mathematics and Mathematical Sciences, Tome 2006 (2006) . doi : 10.1155/IJMMS/2006/75247. http://gdmltest.u-ga.fr/item/05164009/ -clean rings.