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