%0 Journal Article %A Forelli, Frank %T A Theorem on Isometries and the Application of it to the Isometries of Hp(S) for 2 < p < ∞ %J Canadian journal of mathematics %D 1973 %P 284-289 %V 25 %N 2 %U http://geodesic.mathdoc.fr/articles/10.4153/CJM-1973-028-7/ %R 10.4153/CJM-1973-028-7 %F 10_4153_CJM_1973_028_7