@article{RMI_2008_2008_1_a22,
     author = {Jaikin-Zapirain, A},
     title = {On the verbal width of finitely generated pro-$p$ groups.},
     journal = {Revista matem\'atica iberoamericana},
     pages = {617-630},
     publisher = {mathdoc},
     volume = {24},
     number = {2},
     year = {2008},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/RMI_2008_2008_1_a22/}
}