%0 Journal Article %A Clark, Colin %T The Hilbert-Schmidt Property for Embedding Maps between Sobolev Spaces %J Canadian journal of mathematics %D 1966 %P 1079-1084 %V 18 %N 1 %U http://geodesic.mathdoc.fr/articles/10.4153/CJM-1966-107-1/ %R 10.4153/CJM-1966-107-1 %F 10_4153_CJM_1966_107_1