@article{AA_2010_22_3_a4,
     author = {A. G. Bytsko},
     title = {Non-Hermitian spin chains with inhomogeneous coupling},
     journal = {Algebra i analiz},
     pages = {80--106},
     publisher = {mathdoc},
     volume = {22},
     number = {3},
     year = {2010},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/AA_2010_22_3_a4/}
}