@article{AIHPA_1974__20_1_1_0,
     author = {Ginocchio, Maurice},
     title = {Singular operations on algebras (generalized contractions)},
     journal = {Annales de l'institut Henri Poincar\'e. Section A, Physique Th\'eorique},
     pages = {1--19},
     publisher = {Gauthier-Villars},
     volume = {20},
     number = {1},
     year = {1974},
     mrnumber = {360725},
     zbl = {0292.17001},
     language = {en},
     url = {http://archive.numdam.org/item/AIHPA_1974__20_1_1_0/}
}