@article{AIHPA_1987__46_2_215_0,
     author = {Breitenlohner, Peter and Maison, Dieter},
     title = {On the {Geroch} group},
     journal = {Annales de l'I.H.P. Physique th\'eorique},
     pages = {215--246},
     publisher = {Gauthier-Villars},
     volume = {46},
     number = {2},
     year = {1987},
     mrnumber = {887148},
     zbl = {0614.53039},
     language = {en},
     url = {http://www.numdam.org/item/AIHPA_1987__46_2_215_0/}
}