@article{TMF_1981_46_3_a6,
     author = {N. E. Bogdanova and V. N. Popov},
     title = {Two-dimensional field theory with several condensed phases},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {325--334},
     year = {1981},
     volume = {46},
     number = {3},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_1981_46_3_a6/}
}