@article{TMF_1991_86_3_a2,
     author = {D. V. Yur'ev},
     title = {Classification of vertex operators in two-dimensional 
},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {338--343},
     publisher = {mathdoc},
     volume = {86},
     number = {3},
     year = {1991},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_1991_86_3_a2/}
}