Charles Thas. Projective Generalizations of Two Points of Concurrence on the Nine-Point Circle. The American Mathematical Monthly, 110(7):624-627, 2003. [doi]
@article{Thas03-0,
title = {Projective Generalizations of Two Points of Concurrence on the Nine-Point Circle},
author = {Charles Thas},
year = {2003},
url = {http://www.jstor.org/stable/3647747},
researchr = {https://researchr.org/publication/Thas03-0},
cites = {0},
citedby = {0},
journal = {The American Mathematical Monthly},
volume = {110},
number = {7},
pages = {624-627},
}