@article{DANMA_2020_493_a1,
     author = {V. V. Vedyushkina and V. A. Kibkalo and A. T. Fomenko},
     title = {Topological modeling of integrable systems by billiards: realization of numerical invariants},
     journal = {Doklady Rossijskoj akademii nauk. Matematika, informatika, processy upravleni\^a},
     pages = {9--12},
     year = {2020},
     volume = {493},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DANMA_2020_493_a1/}
}