%0 Journal Article %A Guo, Yong-Xin %A Liu, Chang %A Liu, Shi-Xing %T Generalized Birkhoffian realization of nonholonomic systems %J Communications in Mathematics %D 2010 %P 21-35 %V 18 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/COMIM_2010__18_1_a2/ %G en %F COMIM_2010__18_1_a2