%0 Journal Article
%A Yu. A. Grigor'ev
%A V. A. Khudobakhshov
%A A. V. Tsiganov
%T Separation of variables for some systems with a~fourth-order integral of motion
%J Teoretičeskaâ i matematičeskaâ fizika
%D 2013
%P 468-481
%V 177
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/item/TMF_2013_177_3_a3/
%G ru
%F TMF_2013_177_3_a3