%0 Journal Article %A I. Sh. Slavutskii %T An average value of $L$-functions and the class number of a~cyclotomic field %J Zapiski Nauchnykh Seminarov POMI %D 1986 %P 136-143 %V 154 %I mathdoc %U http://geodesic.mathdoc.fr/item/ZNSL_1986_154_a11/ %G ru %F ZNSL_1986_154_a11