%0 Journal Article
%A V. Dragović
%A M. Radnović
%T Topological invariants for elliptical billiards and geodesics on ellipsoids in the Minkowski space
%J Fundamentalʹnaâ i prikladnaâ matematika
%D 2015
%P 51-64
%V 20
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/FPM_2015_20_2_a3/
%G ru
%F FPM_2015_20_2_a3