%0 Journal Article %A Cross, George %T Additivity of the P n-Integral %J Canadian journal of mathematics %D 1978 %P 783-796 %V 30 %N 4 %U http://geodesic.mathdoc.fr/articles/10.4153/CJM-1978-067-2/ %R 10.4153/CJM-1978-067-2 %F 10_4153_CJM_1978_067_2