%0 Journal Article %A 3rd, Wallace S. Martindale %T The Extended Center of Coproducts %J Canadian mathematical bulletin %D 1982 %P 245-248 %V 25 %N 2 %U http://geodesic.mathdoc.fr/articles/10.4153/CMB-1982-036-x/ %R 10.4153/CMB-1982-036-x %F 10_4153_CMB_1982_036_x