%0 Journal Article %T Contraction Property of the Operator of Integration %J Canadian mathematical bulletin %D 1975 %P 367-369 %V 18 %N 3 %U http://geodesic.mathdoc.fr/articles/10.4153/CMB-1975-066-0/ %R 10.4153/CMB-1975-066-0 %F 10_4153_CMB_1975_066_0