@article{GDZPPN002036967, title = {The combinatorially regular polyhedra of index 2.}, journal = {Aequationes mathematicae}, volume = {33}, year = {1987}, pages = {206-220}, zbl = {0632.51024}, url = {http://dml.mathdoc.fr/item/GDZPPN002036967} }
Wills, J.M. The combinatorially regular polyhedra of index 2.. Aequationes mathematicae, Tome 33 (1987) pp. 206-220. http://gdmltest.u-ga.fr/item/GDZPPN002036967/