Frank De Clerck, N. De Feyter. A characterization of the sets of internal and external points of a conic. Eur. J. Comb., 28(7):1910-1921, 2007. [doi]
@article{ClerckF07,
title = {A characterization of the sets of internal and external points of a conic},
author = {Frank De Clerck and N. De Feyter},
year = {2007},
doi = {10.1016/j.ejc.2006.08.004},
url = {http://dx.doi.org/10.1016/j.ejc.2006.08.004},
researchr = {https://researchr.org/publication/ClerckF07},
cites = {0},
citedby = {0},
journal = {Eur. J. Comb.},
volume = {28},
number = {7},
pages = {1910-1921},
}