@article{GDZPPN000363510,
title = {Invertible Relations on Polytopes.},
journal = {Discrete \& computational geometry},
volume = {2},
year = {1987},
pages = {395-400},
zbl = {0629.52013},
url = {http://dml.mathdoc.fr/item/GDZPPN000363510}
}
Sallee, G.T. Invertible Relations on Polytopes.. Discrete & computational geometry, Tome 2 (1987) pp. 395-400. http://gdmltest.u-ga.fr/item/GDZPPN000363510/