%0 Journal Article %A Bishop, E. R. %T On a Theorem of Mitchell %J Canadian mathematical bulletin %D 1970 %P 215-217 %V 13 %N 2 %U http://geodesic.mathdoc.fr/articles/10.4153/CMB-1970-043-9/ %R 10.4153/CMB-1970-043-9 %F 10_4153_CMB_1970_043_9