Rigoberto Flórez, David Forge. Minimal non-orientable matroids in a projective plane. Journal of Combinatorial Theory, Series A, 114(1):175-183, 2007. [doi]
@article{FlorezF07,
title = {Minimal non-orientable matroids in a projective plane},
author = {Rigoberto Flórez and David Forge},
year = {2007},
doi = {10.1016/j.jcta.2006.03.002},
url = {http://dx.doi.org/10.1016/j.jcta.2006.03.002},
researchr = {https://researchr.org/publication/FlorezF07},
cites = {0},
citedby = {0},
journal = {Journal of Combinatorial Theory, Series A},
volume = {114},
number = {1},
pages = {175-183},
}