@article{ELMA_1980__35_141245,
     author = {Faruk F. Abi-Khuzam},
     title = {Inequaltities of {Yff} type in triangle.},
     journal = {Elemente der Mathematik},
     pages = {80--80},
     publisher = {mathdoc},
     volume = {35},
     year = {1980},
     zbl = {0434.51021},
     url = {http://geodesic.mathdoc.fr/item/ELMA_1980__35_141245/}
}