@article{TM_1999_225_a2,
     author = {A. A. Akhmetshin and Yu. S. Vol'vovskii and I. M. Krichever},
     title = {Discrete {Analogs} of the {Darboux{\textendash}Egorov} {Metrics}},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {21--45},
     year = {1999},
     volume = {225},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TM_1999_225_a2/}
}