%0 Journal Article %A D. Yu. Grigor'ev %T Complexity of irreducibility testing for a system of linear ordinary differential equations %J Zapiski Nauchnykh Seminarov POMI %D 1991 %P 60-68 %V 192 %U http://geodesic.mathdoc.fr/item/ZNSL_1991_192_a2/ %G ru %F ZNSL_1991_192_a2