@article{AIHPA_1973__19_2_179_0,
     author = {Hehl, Friedrich W. and von der Heyde, Paul},
     title = {Spin and the structure of space-time},
     journal = {Annales de l'institut Henri Poincar\'e. Section A, Physique Th\'eorique},
     pages = {179--196},
     publisher = {Gauthier-Villars},
     volume = {19},
     number = {2},
     year = {1973},
     mrnumber = {426784},
     language = {en},
     url = {http://www.numdam.org/item/AIHPA_1973__19_2_179_0/}
}