Some Inequalities for Bisectors and Other Elements of Triangle
Mathematica Moravica, Tome 1 (1997) no. 1.

Voir la notice de l'article dans eLibrary of Mathematical Institute of the Serbian Academy of Sciences and Arts

In this paper are given the proof of the inequlity $\sum\frac{w_{a}}{m_{a}}>1$ and some its improvements, and the proof of inequality $\sum\frac{h_{a}}{w_{a}}>1$. 
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     title = {Some {Inequalities} for {Bisectors} and {Other} {Elements} of {Triangle}},
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Milorad Stevanović; Mališa Žižović. Some Inequalities for Bisectors and Other Elements of Triangle. Mathematica Moravica, Tome 1 (1997) no. 1. https://geodesic-test.mathdoc.fr/item/MM3_1997_1_1_a14/