@article{AIHPA_1975__23_3_277_0,
     author = {Mickelsson, J. and Niederle, J.},
     title = {Conformally covariant field equations},
     journal = {Annales de l'institut Henri Poincar\'e. Section A, Physique Th\'eorique},
     pages = {277--295},
     publisher = {Gauthier-Villars},
     volume = {23},
     number = {3},
     year = {1975},
     mrnumber = {389031},
     zbl = {0313.53012},
     language = {en},
     url = {http://www.numdam.org/item/AIHPA_1975__23_3_277_0/}
}