@article{SIGMA_2020_16_a21,
     author = {Pavle V. M. Blagojevi\'c and Michael Harrison and S. Tabachnikov and G\"unter M. Ziegler},
     title = {Counting {Periodic} {Trajectories} of {Finsler} {Billiards}},
     journal = {Symmetry, integrability and geometry: methods and applications},
     year = {2020},
     volume = {16},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SIGMA_2020_16_a21/}
}