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@article{AM2_1987__34_137240, author = {J.M. Wills}, title = {The combinatorially regular polyhedra of index 2.}, journal = {Aequationes mathematicae}, pages = {206--220}, publisher = {mathdoc}, volume = {34}, year = {1987}, zbl = {0632.51024}, url = {http://geodesic.mathdoc.fr/item/AM2_1987__34_137240/} }
J.M. Wills. The combinatorially regular polyhedra of index 2.. Aequationes mathematicae, Tome 34 (1987), pp. 206-220. http://geodesic.mathdoc.fr/item/AM2_1987__34_137240/