@article{urn:eudml:doc:41063, title = {The lattice R-tors for perfect rings.}, journal = {Publicacions Matem\`atiques}, volume = {33}, year = {1989}, pages = {17-35}, zbl = {0679.16021}, mrnumber = {MR1004222}, language = {en}, url = {http://dml.mathdoc.fr/item/urn:eudml:doc:41063} }
Rincón Mejía, H. A. The lattice R-tors for perfect rings.. Publicacions Matemàtiques, Tome 33 (1989) pp. 17-35. http://gdmltest.u-ga.fr/item/urn:eudml:doc:41063/