%0 Journal Article %A I. M. Krichever %A S. P. Novikov %T Algebras of virasoro type, energy-momentum tensor, and decomposition operators on Riemann surfaces %J Funkcionalʹnyj analiz i ego priloženiâ %D 1989 %P 24-40 %V 23 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/FAA_1989_23_1_a2/ %G ru %F FAA_1989_23_1_a2