@article{AIHPA_1983__38_1_81_0,
     author = {Pogrebkov, A. K. and Todorov, I. T.},
     title = {Relativistic hamiltonian dynamics of singularities of the {Liouville} equation},
     journal = {Annales de l'I.H.P. Physique th\'eorique},
     pages = {81--92},
     publisher = {Gauthier-Villars},
     volume = {38},
     number = {1},
     year = {1983},
     mrnumber = {700703},
     zbl = {0539.35068},
     language = {en},
     url = {http://archive.numdam.org/item/AIHPA_1983__38_1_81_0/}
}