%0 Journal Article %A A. I. Sokolov %T Phase transitions in two dimensions and multiloop renormalization group expansions %J Teoretičeskaâ i matematičeskaâ fizika %D 2013 %P 140-149 %V 176 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/TMF_2013_176_1_a13/ %G ru %F TMF_2013_176_1_a13