@article{f165f67a76fe4b7eb101932f3ca6a3ec,
title = "Every non-Euclidean oriented matroid admits a biquadratic final polynomial",
abstract = "Richter-Gebert proved that every non-Euclidean uniform oriented matroid admits a biquadratic final polynomial. We extend this result to the non-uniform case.",
author = "Komei Fukuda and Sonoko Moriyama and Hiroki Nakayama and J{\"u}rgen Richter-Gebert",
note = "Funding Information: * Research supported by the Swiss National Science Foundation Project 200021-105202, “Polytopes, Matroids and Polynomial Systems”.",
year = "2009",
doi = "10.1007/s00493-009-2255-2",
language = "English",
volume = "29",
pages = "691--698",
journal = "Combinatorica",
issn = "0209-9683",
publisher = "Janos Bolyai Mathematical Society",
number = "6",
}