%0 Journal Article %A Miller, H. D. B. %T An Extrapolation Theorem for Positive Operators %J Canadian journal of mathematics %D 1978 %P 225-230 %V 30 %N 2 %U http://geodesic.mathdoc.fr/articles/10.4153/CJM-1978-020-6/ %R 10.4153/CJM-1978-020-6 %F 10_4153_CJM_1978_020_6