@article{AIHPA_1977__27_3_319_0,
     author = {Fredenhagen, Klaus},
     title = {Quantum electrodynamics with one degree of freedom for the photon field},
     journal = {Annales de l'institut Henri Poincar\'e. Section A, Physique Th\'eorique},
     pages = {319--334},
     publisher = {Gauthier-Villars},
     volume = {27},
     number = {3},
     year = {1977},
     mrnumber = {471759},
     language = {en},
     url = {http://archive.numdam.org/item/AIHPA_1977__27_3_319_0/}
}