@article{NUMA_1973__21_132215,
     author = {Wilhelm Niethammer},
     title = {Ein numerisches {Verfahren} zur analytischen {Fortsetzung.}},
     journal = {Numerische Mathematik},
     pages = {81--92},
     publisher = {mathdoc},
     volume = {21},
     year = {1973},
     zbl = {0246.65012},
     url = {http://geodesic.mathdoc.fr/item/NUMA_1973__21_132215/}
}