%0 Journal Article %A N. A. Shirokov %T A variational formula for Bergman kernels %J Zapiski Nauchnykh Seminarov POMI %D 1998 %P 221-243 %V 255 %I mathdoc %U http://geodesic.mathdoc.fr/item/ZNSL_1998_255_a14/ %G ru %F ZNSL_1998_255_a14