%0 Journal Article %A Peterson, Bruce B. %T Formal Contraction of the N-Simplex %J Canadian mathematical bulletin %D 1967 %P 659-664 %V 10 %N 5 %U http://geodesic.mathdoc.fr/articles/10.4153/CMB-1967-065-x/ %R 10.4153/CMB-1967-065-x %F 10_4153_CMB_1967_065_x