%0 Journal Article %A N. A. Slavnov %T On an identity for dual fields %J Zapiski Nauchnykh Seminarov POMI %D 1997 %P 270-281 %V 245 %I mathdoc %U http://geodesic.mathdoc.fr/item/ZNSL_1997_245_a14/ %G ru %F ZNSL_1997_245_a14