@article{INTA_1981_18_a1,
     author = {I. V. Cherednik},
     title = {Algebraic aspects of two-dimensional chiral {fields.~II}},
     journal = {Itogi Nauki i Tekhniki. Seriya Algebra. Geometriya. Topologiya},
     pages = {73--150},
     year = {1981},
     volume = {18},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/INTA_1981_18_a1/}
}