%0 Journal Article %A D. Yu. Grigor'ev %T On the complexity of the ``wild'' matrix problems and of the isomorphism of algebras and of graphs %J Zapiski Nauchnykh Seminarov POMI %D 1981 %P 10-17 %V 105 %I mathdoc %U http://geodesic.mathdoc.fr/item/ZNSL_1981_105_a2/ %G ru %F ZNSL_1981_105_a2