@article{ELMA_1979__34_141224,
     author = {Faruk F. Abi-Khuzam},
     title = {Distance theorems in geometry.},
     journal = {Elemente der Mathematik},
     pages = {7--12},
     publisher = {mathdoc},
     volume = {34},
     year = {1979},
     zbl = {0402.51006},
     url = {http://geodesic.mathdoc.fr/item/ELMA_1979__34_141224/}
}