%0 Journal Article %A Ellis, Graham %T On Peiffer central series %J Glasgow mathematical journal %D 1998 %P 177-185 %V 40 %N 2 %U http://geodesic.mathdoc.fr/articles/10.1017/S0017089500032493/ %R 10.1017/S0017089500032493 %F 10_1017_S0017089500032493