%0 Journal Article %A Neuman, František %T Covariant constructions in the theory of linear differential equations %J Časopis pro pěstování matematiky %D 1986 %P 201-207 %V 111 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.21136/CPM.1986.118277/ %R 10.21136/CPM.1986.118277 %G en %F 10_21136_CPM_1986_118277