@article{TMF_1998_117_3_a11,
     author = {S. N. Martynov},
     title = {Anharmonic states of the one-dimensional anisotropic {Heisenberg} model with free boundary conditions},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {489--497},
     publisher = {mathdoc},
     volume = {117},
     number = {3},
     year = {1998},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_1998_117_3_a11/}
}