%0 Journal Article %A A. M. Semikhatov %A I. Yu. Tipunin %A B. L. Feigin %T Semi-Infinite Realization of Unitary Representations of the $N=2$ Algebra and Related Constructions %J Teoretičeskaâ i matematičeskaâ fizika %D 2001 %P 3-62 %V 126 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/TMF_2001_126_1_a0/ %G ru %F TMF_2001_126_1_a0