@article{NUMA_1970__16_132034,
     author = {E.M. FERREIRA and J. SESMA},
     title = {Zeros of the {Modified} {Hankel} {Function.}},
     journal = {Numerische Mathematik},
     pages = {278--284},
     publisher = {mathdoc},
     volume = {16},
     year = {1970},
     zbl = {0219.65048},
     url = {http://geodesic.mathdoc.fr/item/NUMA_1970__16_132034/}
}