%0 Journal Article %A Cross, G. E. %T On the Generality of the AP-Integral %J Canadian journal of mathematics %D 1971 %P 557-561 %V 23 %N 3 %U http://geodesic.mathdoc.fr/articles/10.4153/CJM-1971-062-8/ %R 10.4153/CJM-1971-062-8 %F 10_4153_CJM_1971_062_8