%0 Journal Article %A Robertson, E. F. %A Williams, P. D. %T Efficient Presentations of the Groups PSL(2, 2p) and SL(2, 2p) %J Canadian mathematical bulletin %D 1989 %P 3-10 %V 32 %N 1 %U http://geodesic.mathdoc.fr/articles/10.4153/CMB-1989-001-1/ %R 10.4153/CMB-1989-001-1 %F 10_4153_CMB_1989_001_1