%0 Journal Article %A R. K. Gazizov %A A. A. Gainetdinova %T Operator of invariant differentiation and its application for integrating systems of ordinary differential equations %J Ufa mathematical journal %D 2017 %P 12-21 %V 9 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/UFA_2017_9_4_a1/ %G en %F UFA_2017_9_4_a1