@article{PM_2003_2003_1_a12,
     author = {Kurdachenko, Leonid A. and Subbotin, Igor Ya.},
     title = {Pronormalidad, contranormalidad y nilpotencia generalizada en grupos infinitos.},
     journal = {Publicacions matem\`atiques},
     pages = {389-414},
     publisher = {mathdoc},
     volume = {47},
     number = {2},
     year = {2003},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/PM_2003_2003_1_a12/}
}