@article{MET_1980__27_186200,
     author = {M. Yaqub and A.M. Khan},
     title = {On the {Distribution} of a {Distance} {Function} on the {Sphere.}},
     journal = {Metrika},
     pages = {145--152},
     publisher = {mathdoc},
     volume = {27},
     year = {1980},
     zbl = {0438.60019},
     url = {http://geodesic.mathdoc.fr/item/MET_1980__27_186200/}
}