@article{TMF_2010_164_3_a16,
     author = {S. M. Tashpulatov},
     title = {Spectrum of the~energy operator of two-magnon systems in the~isotropic {Heisenberg} ferromagnet model with impurity},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {464--472},
     publisher = {mathdoc},
     volume = {164},
     number = {3},
     year = {2010},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_2010_164_3_a16/}
}