@article{VMUMM_2023_5_a0,
     author = {A. A. Kuznetsova},
     title = {Modeling of degenerate peculiarities of integrable billiard systems by billiard books},
     journal = {Vestnik Moskovskogo universiteta. Matematika, mehanika},
     pages = {3--10},
     year = {2023},
     number = {5},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMUMM_2023_5_a0/}
}