@article{VMUMM_2024_3_a3,
     author = {D. A. Tuniyants},
     title = {Topology of isoenergetic surfaces of billiard books glued of rings},
     journal = {Vestnik Moskovskogo universiteta. Matematika, mehanika},
     pages = {26--35},
     year = {2024},
     number = {3},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMUMM_2024_3_a3/}
}