%0 Journal Article
%A Dittrich, Jaroslav
%T On the topological charge conservation in the three-dimensional ${\rm O}(3)$ $\sigma$-model.
%J Applications of Mathematics
%D 1984
%P 367-371
%V 29
%N 5
%I mathdoc
%U http://geodesic.mathdoc.fr/articles/10.21136/AM.1984.104106/
%R 10.21136/AM.1984.104106
%G en
%F 10_21136_AM_1984_104106