@article{GDZPPN002034832, title = {The Lehmus inequality.}, journal = {Aequationes mathematicae}, volume = {28}, year = {1985}, pages = {4-12}, zbl = {0554.51010}, url = {http://dml.mathdoc.fr/item/GDZPPN002034832} }
Coxeter, H.S.M. The Lehmus inequality.. Aequationes mathematicae, Tome 28 (1985) pp. 4-12. http://gdmltest.u-ga.fr/item/GDZPPN002034832/