@article{AIHPA_1992__56_4_375_0,
     author = {Cicogna, G. and Gaeta, G.},
     title = {Lie-point symmetries in bifurcation problems},
     journal = {Annales de l'I.H.P. Physique th\'eorique},
     pages = {375--414},
     publisher = {Gauthier-Villars},
     volume = {56},
     number = {4},
     year = {1992},
     mrnumber = {1175476},
     zbl = {0812.34032},
     language = {en},
     url = {http://www.numdam.org/item/AIHPA_1992__56_4_375_0/}
}