@article{NUMA_1975__24_132355,
     author = {K. Schumacher},
     title = {Iterative {Optimierungsverfahren,} die unter schwachen {Voraussetzungen} konvergieren.},
     journal = {Numerische Mathematik},
     pages = {443--456},
     publisher = {mathdoc},
     volume = {24},
     year = {1975},
     zbl = {0295.65041},
     url = {http://geodesic.mathdoc.fr/item/NUMA_1975__24_132355/}
}