%0 Journal Article %A Thompson, R. C. %T On the Matrices A and f(A) %J Canadian mathematical bulletin %D 1969 %P 581-587 %V 12 %N 5 %U http://geodesic.mathdoc.fr/articles/10.4153/CMB-1969-075-7/ %R 10.4153/CMB-1969-075-7 %F 10_4153_CMB_1969_075_7