@article{TMF_2008_156_2_a3,
     author = {V. L. Vereshchagin},
     title = {Darboux-integrable discrete systems},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {207--219},
     publisher = {mathdoc},
     volume = {156},
     number = {2},
     year = {2008},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_2008_156_2_a3/}
}