@article{PM_1992_1992_1_a27,
     author = {Arlinghaus, Frank A. and Vaserstein, Leonid L.},
     title = {El trabajo de {Pere} {Menal} sobre subgrupos normales.},
     journal = {Publicacions matem\`atiques},
     pages = {389-400},
     year = {1992},
     volume = {36},
     number = {2A},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/PM_1992_1992_1_a27/}
}