@article{PM_1997_1997_1_a29,
     author = {Tan, Geok Choo},
     title = {El completo nilpotente {P} no es idempotente.},
     journal = {Publicacions matem\`atiques},
     pages = {481-487},
     publisher = {mathdoc},
     volume = {41},
     number = {2},
     year = {1997},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/PM_1997_1997_1_a29/}
}