@article{AIHPA_1968__9_1_7_0,
     author = {Fuchs, G\'erard},
     title = {About {O'Raifeartaigh's} theorem},
     journal = {Annales de l'institut Henri Poincar\'e. Section A, Physique Th\'eorique},
     pages = {7--16},
     publisher = {Gauthier-Villars},
     volume = {9},
     number = {1},
     year = {1968},
     mrnumber = {241063},
     zbl = {0162.58201},
     language = {en},
     url = {http://archive.numdam.org/item/AIHPA_1968__9_1_7_0/}
}