%0 Journal Article
%A Dennis Johnson
%T Conjugacy Relations in Subgroups of the Mapping Class Group and a Group-Theoretic Description of the Rochlin Invariant.
%J Mathematische Annalen
%D 1980
%P 243-264
%V 249
%I mathdoc
%U http://geodesic.mathdoc.fr/item/MAN_1980__249_163404/
%F MAN_1980__249_163404