@article{VMUMM_2022_1_a1,
     author = {V. V. Vedyushkina and A. I. Skvortsov},
     title = {Topology of integrable billiard in an ellipse on the {Minkowski} plane with the {Hooke} potential},
     journal = {Vestnik Moskovskogo universiteta. Matematika, mehanika},
     pages = {8--19},
     year = {2022},
     number = {1},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMUMM_2022_1_a1/}
}