@article{04132304, title = {Exchange PF-rings and almost PP-rings.}, journal = {International Journal of Mathematics and Mathematical Sciences}, volume = {12}, year = {1989}, pages = {725-727}, doi = {10.1155/S016117128900089X}, zbl = {0692.13007}, language = {en}, url = {http://dml.mathdoc.fr/item/04132304} }
Al-Ezeh, H. Exchange PF-rings and almost PP-rings.. International Journal of Mathematics and Mathematical Sciences, Tome 12 (1989) pp. 725-727. doi : 10.1155/S016117128900089X. http://gdmltest.u-ga.fr/item/04132304/