@article{MZ_1957__68_169719,
     author = {K. Zeller and G.G. Lorentz},
     title = {\"Uber {Paare} von {Limitierungsverfahren.}},
     journal = {Mathematische Zeitschrift},
     pages = {428--438},
     publisher = {mathdoc},
     volume = {68},
     year = {1957},
     zbl = {0080.04103},
     url = {http://geodesic.mathdoc.fr/item/MZ_1957__68_169719/}
}