%0 Journal Article %A V. N. Ryzhov %A E. E. Tareeva %T Statistical mechanics of vortex system in a thin-film superconductor in the ring approximation %J Teoretičeskaâ i matematičeskaâ fizika %D 1993 %P 425-437 %V 96 %N 3 %U http://geodesic.mathdoc.fr/item/TMF_1993_96_3_a6/ %G ru %F TMF_1993_96_3_a6