@article{DMSMF_1987_1987_1_a0, author = {Grasselli, Luigi }, title = {Crystallizations and other manifold representations.}, journal = {Disertaciones del Seminario de Matem\'aticas Fundamentales}, pages = {1-17}, year = {1987}, volume = {1}, language = {en}, url = {http://geodesic.mathdoc.fr/item/DMSMF_1987_1987_1_a0/} }