@article{ARM_1991__27_3-4_a7,
     author = {Alzer, Horst},
     title = {A short proof of {Ky} {Fan's} inequality},
     journal = {Archivum mathematicum},
     pages = {199--200},
     publisher = {mathdoc},
     volume = {27},
     number = {3-4},
     year = {1991},
     mrnumber = {1189215},
     zbl = {0759.26014},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ARM_1991__27_3-4_a7/}
}