@article{AIHPA_1965__3_1_1_0,
     author = {L\'evy-Leblond, Jean-Marc},
     title = {Une nouvelle limite non-relativiste du groupe de {Poincar\'e}},
     journal = {Annales de l'institut Henri Poincar\'e. Section A, Physique Th\'eorique},
     pages = {1--12},
     publisher = {Gauthier-Villars},
     volume = {3},
     number = {1},
     year = {1965},
     mrnumber = {192900},
     zbl = {0143.22601},
     language = {fr},
     url = {http://www.numdam.org/item/AIHPA_1965__3_1_1_0/}
}