@article{VSGTU_2011_2_a27,
     author = {S. V. Chervon and Yu. A. Svistunova},
     title = {Spherically-symmetric non-linear sigma model: the exact solutions obtained with isometrical embedding method},
     journal = {Journal of Samara State Technical University, Ser. Physical and Mathematical Sciences},
     pages = {227--234},
     publisher = {mathdoc},
     number = {2},
     year = {2011},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VSGTU_2011_2_a27/}
}