Physics Letters B
Apr. 16th, 2013 12:12 amB. Feigin, E. Frenkel, Quantization of the Drinfeld-Sokolov reduction, Physics Letters B vol. 246, no. 1-2, p. 75-81, 1990.
http://dx.doi.org/10.1016/0370-2693(90)91310-8
http://www.sciencedirect.com/science/article/pii/0370269390913108
Update: спасибо, статья получена.