@article{ZNSL_1992_199_a5,
     author = {E. Sh. Gutshabash and V. D. Lipovsky},
     title = {Exact solutions of nonlinear sigma-model in curved space and the theory of media with variable saturation magnetization},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {71--80},
     publisher = {mathdoc},
     volume = {199},
     year = {1992},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1992_199_a5/}
}