@article{GDZPPN000363057,
title = {Spherical Complexes and Nonprojective Tone Varieties.},
journal = {Discrete \& computational geometry},
volume = {1},
year = {1986},
pages = {115-122},
zbl = {0597.52009},
url = {http://dml.mathdoc.fr/item/GDZPPN000363057}
}
Ewald, G. Spherical Complexes and Nonprojective Tone Varieties.. Discrete & computational geometry, Tome 1 (1986) pp. 115-122. http://gdmltest.u-ga.fr/item/GDZPPN000363057/