@article{01596908, title = {Gergonne and Nagel points for simplices in the }, journal = {Journal for Geometry and Graphics}, volume = {4}, year = {2000}, pages = {119-127}, zbl = {0974.51017}, language = {en}, url = {http://dml.mathdoc.fr/item/01596908} }
Koźniewski, Edwin; Górska, Renata A. Gergonne and Nagel points for simplices in the . Journal for Geometry and Graphics, Tome 4 (2000) pp. 119-127. http://gdmltest.u-ga.fr/item/01596908/