@article{AIHPA_1977__27_4_407_0,
     author = {Droz-Vincent, Ph.},
     title = {Two-body relativistic systems},
     journal = {Annales de l'institut Henri Poincar\'e. Section A, Physique Th\'eorique},
     pages = {407--424},
     publisher = {Gauthier-Villars},
     volume = {27},
     number = {4},
     year = {1977},
     mrnumber = {496313},
     language = {en},
     url = {http://www.numdam.org/item/AIHPA_1977__27_4_407_0/}
}