TY - JOUR TI - Contraction Property of the Operator of Integration JO - Canadian mathematical bulletin PY - 1975 SP - 367 EP - 369 VL - 18 IS - 3 UR - http://geodesic.mathdoc.fr/articles/10.4153/CMB-1975-066-0/ DO - 10.4153/CMB-1975-066-0 ID - 10_4153_CMB_1975_066_0 ER -