@article{GDZPPN002227126, title = {Cyclic Crystallizations of Spheres.}, journal = {Manuscripta mathematica}, volume = {55}, year = {1986}, pages = {213-218}, zbl = {0604.57018}, url = {http://dml.mathdoc.fr/item/GDZPPN002227126} }
Bracho, Javier. Cyclic Crystallizations of Spheres.. Manuscripta mathematica, Tome 55 (1986) pp. 213-218. http://gdmltest.u-ga.fr/item/GDZPPN002227126/