%0 Journal Article
%A A. A. Prokop'ev
%T Topological invariants of the Hamiltonian system for the $B$-phase of superfluid Helium-3
%J Trudy Matematicheskogo Instituta imeni V.A. Steklova
%D 1992
%P 226-227
%V 47
%N 4
%I mathdoc
%U http://geodesic.mathdoc.fr/item/RM_1992_47_4_a16/
%G en
%F RM_1992_47_4_a16