@article{PM_1989_1989_1_a0,
     author = {Rinc\'on Mej{\'\i}a, H. A.},
     title = {Los subret{\'\i}culos de {R-tors} para anillos perfectos.},
     journal = {Publicacions matem\`atiques},
     pages = {17-35},
     publisher = {mathdoc},
     volume = {33},
     number = {1},
     year = {1989},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/PM_1989_1989_1_a0/}
}