@article{AM2_1993__45_2-3_137516,
     author = {Clark Kimberling},
     title = {Functional equations associated with triangle geometry.},
     journal = {Aequationes mathematicae},
     pages = {127--152},
     publisher = {mathdoc},
     volume = {45},
     number = {2-3},
     year = {1993},
     zbl = {0774.39006},
     url = {http://geodesic.mathdoc.fr/item/AM2_1993__45_2-3_137516/}
}