%0 Journal Article %A I. L. Vulis %T Spectral asymptotics of elliptic strongly degenerate operators of arbitrary order %J Zapiski Nauchnykh Seminarov POMI %D 1976 %P 25-30 %V 59 %I mathdoc %U http://geodesic.mathdoc.fr/item/ZNSL_1976_59_a1/ %G ru %F ZNSL_1976_59_a1