The Lehmus inequality.
Aequationes mathematicae, Tome 28 (1985), pp. 4-12
@article{AM2_1985__28_137034,
author = {H.S.M. Coxeter},
title = {The {Lehmus} inequality.},
journal = {Aequationes mathematicae},
pages = {4--12},
year = {1985},
volume = {28},
zbl = {0554.51010},
url = {http://geodesic.mathdoc.fr/item/AM2_1985__28_137034/}
}
H.S.M. Coxeter. The Lehmus inequality.. Aequationes mathematicae, Tome 28 (1985), pp. 4-12. http://geodesic.mathdoc.fr/item/AM2_1985__28_137034/