@article{JRAM_1962__211_150556,
     author = {Pierre Comment},
     title = {Sur la r\`egle de simplification.},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {162--168},
     publisher = {mathdoc},
     volume = {211},
     year = {1962},
     zbl = {0221.08016},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1962__211_150556/}
}