@article{AIHPA_1970__13_3_221_0,
     author = {Levy-Nahas, Monique},
     title = {Two simple applications of the deformation of {Lie} algebras},
     journal = {Annales de l'institut Henri Poincar\'e. Section A, Physique Th\'eorique},
     pages = {221--227},
     publisher = {Gauthier-Villars},
     volume = {13},
     number = {3},
     year = {1970},
     mrnumber = {273919},
     zbl = {0204.36101},
     language = {en},
     url = {http://www.numdam.org/item/AIHPA_1970__13_3_221_0/}
}