@article{ELMA_1989__44_3_141445,
     author = {G. Corach and J. McGowan and H. Porta},
     title = {Some inequalities for the triangle.},
     journal = {Elemente der Mathematik},
     pages = {1--15},
     publisher = {mathdoc},
     volume = {44},
     number = {3},
     year = {1989},
     zbl = {0714.51011},
     url = {http://geodesic.mathdoc.fr/item/ELMA_1989__44_3_141445/}
}