%0 Journal Article %A A. B. Voronetskii %T Singular series of genusĀ 2 for sums of squares %J Zapiski Nauchnykh Seminarov POMI %D 1986 %P 26-39 %V 151 %U http://geodesic.mathdoc.fr/item/ZNSL_1986_151_a2/ %G ru %F ZNSL_1986_151_a2