%0 Journal Article %A A. V. Roiter %T Matrix problems and the representations of bisystems %J Zapiski Nauchnykh Seminarov POMI %D 1972 %P 130-143 %V 28 %U http://geodesic.mathdoc.fr/item/ZNSL_1972_28_a6/ %G ru %F ZNSL_1972_28_a6