@article{GDZPPN00126222X,
title = {The existence of identity of orthodox semigroup rings.},
journal = {Semigroup forum},
volume = {46},
year = {1993},
pages = {27-31},
zbl = {0787.16024},
url = {http://dml.mathdoc.fr/item/GDZPPN00126222X}
}
Li, F. The existence of identity of orthodox semigroup rings.. Semigroup forum, Tome 46 (1993) pp. 27-31. http://gdmltest.u-ga.fr/item/GDZPPN00126222X/