@article{GDZPPN000364630, title = {A New Index for Polytopes.}, journal = {Discrete \& computational geometry}, volume = {6}, year = {1991}, pages = {33-48}, zbl = {0761.52009}, url = {http://dml.mathdoc.fr/item/GDZPPN000364630} }
Bayer, M.M.; Klapper, A. A New Index for Polytopes.. Discrete & computational geometry, Tome 6 (1991) pp. 33-48. http://gdmltest.u-ga.fr/item/GDZPPN000364630/