@article{GDZPPN000363138,
title = {On the Cone of Nonnegative Circuits.},
journal = {Discrete \& computational geometry},
volume = {1},
year = {1986},
pages = {229-240},
zbl = {0599.05039},
url = {http://dml.mathdoc.fr/item/GDZPPN000363138}
}
Hoffman, A.J.; Lee, Carl W. On the Cone of Nonnegative Circuits.. Discrete & computational geometry, Tome 1 (1986) pp. 229-240. http://gdmltest.u-ga.fr/item/GDZPPN000363138/