@article{10_2298_TAM170523005J,
     author = {Bo\v{z}idar Jovanovi\'c},
     title = {Billiards on constant curvature spaces and generating functions for systems with constraints},
     journal = {Theoretical and applied mechanics},
     pages = {103 },
     year = {2017},
     volume = {44},
     number = {1},
     doi = {10.2298/TAM170523005J},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.2298/TAM170523005J/}
}