@article{AIHPA_1973__18_3_251_0,
     author = {Modugno, Marco},
     title = {Sur quelques propri\'et\'es de la double 2-forme gravitationnelle {W}},
     journal = {Annales de l'institut Henri Poincar\'e. Section A, Physique Th\'eorique},
     pages = {251--262},
     publisher = {Gauthier-Villars},
     volume = {18},
     number = {3},
     year = {1973},
     mrnumber = {329555},
     language = {fr},
     url = {http://www.numdam.org/item/AIHPA_1973__18_3_251_0/}
}