@article{TMF_1974_21_1_a7,
     author = {V. I. Lymar' and Yu. G. Rudoi},
     title = {Spectrum and correlation functions of an anisotropic {Heisenberg} antiferromagnet
},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {86--102},
     publisher = {mathdoc},
     volume = {21},
     number = {1},
     year = {1974},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_1974_21_1_a7/}
}