%0 Journal Article
%A John F. Hughes
%A Paul M. Melvin
%T The Smale invariant of a knot.
%J Commentarii mathematici Helvetici
%D 1985
%P 615-627
%V 60
%I mathdoc
%U http://geodesic.mathdoc.fr/item/CMH_1985__60_140034/
%F CMH_1985__60_140034