%0 Journal Article %A Dyer, Micheal N. %T Two Term Conditions in π Exact Couples %J Canadian journal of mathematics %D 1967 %P 1263-1288 %V 19 %N 1 %U http://geodesic.mathdoc.fr/articles/10.4153/CJM-1967-116-6/ %R 10.4153/CJM-1967-116-6 %F 10_4153_CJM_1967_116_6