%0 Journal Article %A Rooney, P. G. %T A Technique for Studying the Boundedness and Extendability of Certain Types of Operators %J Canadian journal of mathematics %D 1973 %P 1090-1102 %V 25 %N 5 %U http://geodesic.mathdoc.fr/articles/10.4153/CJM-1973-116-9/ %R 10.4153/CJM-1973-116-9 %F 10_4153_CJM_1973_116_9