%0 Journal Article %A H. Baran %A M. Marvan %T A~conjecture concerning nonlocal terms of recursion operators %J Fundamentalʹnaâ i prikladnaâ matematika %D 2006 %P 23-33 %V 12 %N 7 %I mathdoc %U http://geodesic.mathdoc.fr/item/FPM_2006_12_7_a2/ %G ru %F FPM_2006_12_7_a2