@article{NUMA_1972__19_132159,
     author = {E. Gekeler},
     title = {\"Uber mehrstufige {Iterationsverfahren} und die {L\"osung} der  {Hammersteinschen} {Gleichung.}},
     journal = {Numerische Mathematik},
     pages = {351--360},
     publisher = {mathdoc},
     volume = {19},
     year = {1972},
     zbl = {0244.65041},
     url = {http://geodesic.mathdoc.fr/item/NUMA_1972__19_132159/}
}