@article{VMUMM_2021_2_a4,
     author = {V. V. Vedyushkina},
     title = {Local modeling of {Liouville} foliations by billiards: implementation of edge invariants},
     journal = {Vestnik Moskovskogo universiteta. Matematika, mehanika},
     pages = {28--32},
     publisher = {mathdoc},
     number = {2},
     year = {2021},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMUMM_2021_2_a4/}
}