@article{AIHPA_1972__16_1_51_0,
     author = {Pons, Roland},
     title = {Int\'egration des \'equations de {Newman-Penrose} dans le cas de l'espace minkowskien},
     journal = {Annales de l'institut Henri Poincar\'e. Section A, Physique Th\'eorique},
     pages = {51--61},
     publisher = {Gauthier-Villars},
     volume = {16},
     number = {1},
     year = {1972},
     language = {fr},
     url = {http://www.numdam.org/item/AIHPA_1972__16_1_51_0/}
}