@article{05668346,
title = {Degree of triangle centers and a generalization of the Euler line.},
journal = {Beitr\"age zur Algebra und Geometrie},
volume = {51},
year = {2010},
pages = {63-89},
zbl = {1193.51020},
language = {en},
url = {http://dml.mathdoc.fr/item/05668346}
}
Agaoka, Yoshio. Degree of triangle centers and a generalization of the Euler line.. Beiträge zur Algebra und Geometrie, Tome 51 (2010) pp. 63-89. http://gdmltest.u-ga.fr/item/05668346/