@article{1206134466, author = {Ooishi, Akira}, title = {Openness of loci, ${\rm P}$-excellent rings and modules}, journal = {Hiroshima Math. J.}, volume = {10}, number = {2}, year = {1980}, pages = { 419-436}, language = {en}, url = {http://dml.mathdoc.fr/item/1206134466} }
Ooishi, Akira. Openness of loci, ${\rm P}$-excellent rings and modules. Hiroshima Math. J., Tome 10 (1980) no. 2, pp. 419-436. http://gdmltest.u-ga.fr/item/1206134466/