@article{JGG_2000_4_2_a2,
     author = {E. Kozniewski and R. A. Gorska},
     title = {Gergonne and {Nagel} {Points} for {Simplices} in the {n-Dimensional} {Space}},
     journal = {Journal for geometry and graphics},
     pages = {119--128},
     publisher = {mathdoc},
     volume = {4},
     number = {2},
     year = {2000},
     url = {http://geodesic.mathdoc.fr/item/JGG_2000_4_2_a2/}
}