@article{AIHPA_1975__22_3_249_0,
     author = {Velo, G.},
     title = {An existence theorem for a massive spin one particle in an external tensor field},
     journal = {Annales de l'institut Henri Poincar\'e. Section A, Physique Th\'eorique},
     pages = {249--255},
     publisher = {Gauthier-Villars},
     volume = {22},
     number = {3},
     year = {1975},
     mrnumber = {378627},
     language = {en},
     url = {http://archive.numdam.org/item/AIHPA_1975__22_3_249_0/}
}