%0 Journal Article %A Valery V. Kozlov %T On rational integrals of geodesic flows %J Russian journal of nonlinear dynamics %D 2014 %P 439-445 %V 10 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/ND_2014_10_4_a3/ %G ru %F ND_2014_10_4_a3