@article{TMF_2003_135_3_a0,
     author = {A. A. Andrianov and D. Espriu},
     title = {Strings and {Pions}},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {355--369},
     year = {2003},
     volume = {135},
     number = {3},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_2003_135_3_a0/}
}