@article{RM_1993_48_6_a2,
     author = {S. L. Tabachnikov},
     title = {Dual billiards},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {81--109},
     publisher = {mathdoc},
     volume = {48},
     number = {6},
     year = {1993},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/RM_1993_48_6_a2/}
}