@article{TMF_1998_117_1_a3,
     author = {A. N. Leznov},
     title = {Integrable two-dimensional {ultra-Toda} mappings and chains},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {107--122},
     publisher = {mathdoc},
     volume = {117},
     number = {1},
     year = {1998},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_1998_117_1_a3/}
}