@article{01894852, title = {On matrix rings over unit-regular rings.}, journal = {Beitr\"age zur Algebra und Geometrie}, volume = {44}, year = {2003}, pages = {179-188}, zbl = {1025.16008}, language = {en}, url = {http://dml.mathdoc.fr/item/01894852} }
Lok, Tsan-Ming; Shum, K.P. On matrix rings over unit-regular rings.. Beiträge zur Algebra und Geometrie, Tome 44 (2003) pp. 179-188. http://gdmltest.u-ga.fr/item/01894852/