@article{SIGMA_2005_1_a22,
     author = {Ismagil T. Habibullin},
     title = {Characteristic {Algebras} of {Fully} {Discrete} {Hyperbolic} {Type} {Equations}},
     journal = {Symmetry, integrability and geometry: methods and applications},
     year = {2005},
     volume = {1},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SIGMA_2005_1_a22/}
}