@article{SM_2020_211_1_a0,
     author = {E. E. Karginova},
     title = {Billiards bounded by arcs of confocal quadrics on the {Minkowski} plane},
     journal = {Sbornik. Mathematics},
     pages = {1--28},
     publisher = {mathdoc},
     volume = {211},
     number = {1},
     year = {2020},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_2020_211_1_a0/}
}