@article{NUMA_1960__2_131459,
     author = {W. MAGNUS and L. KOTIN},
     title = {The {Zeros} of the {Hankel} {Function} as a {Function} of its {Order.}},
     journal = {Numerische Mathematik},
     pages = {228--244},
     publisher = {mathdoc},
     volume = {2},
     year = {1960},
     zbl = {0095.05303},
     url = {http://geodesic.mathdoc.fr/item/NUMA_1960__2_131459/}
}