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@article{DCG_1986__1_130992, author = {A.J. Hoffman and Carl W. Lee}, title = {On the {Cone} of {Nonnegative} {Circuits.}}, journal = {Discrete & computational geometry}, pages = {229--240}, publisher = {mathdoc}, volume = {1}, year = {1986}, zbl = {0599.05039}, url = {http://geodesic.mathdoc.fr/item/DCG_1986__1_130992/} }
A.J. Hoffman; Carl W. Lee. On the Cone of Nonnegative Circuits.. Discrete & computational geometry, Tome 1 (1986), pp. 229-240. http://geodesic.mathdoc.fr/item/DCG_1986__1_130992/