@article{PM_1994_1994_1_a20,
     author = {Lennox, John C. and Smith, Howard and Wiegold, James},
     title = {Grupos localmente resolubles isomorfos con todos los subgrupos normales no triviales.},
     journal = {Publicacions matem\`atiques},
     pages = {203-205},
     publisher = {mathdoc},
     volume = {38},
     number = {1},
     year = {1994},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/PM_1994_1994_1_a20/}
}