@article{JRAM_1960__205_150453,
     author = {Erich H\"artter},
     title = {Einige {Absch\"atzungen} f\"ur {Abschnittsbasen.}},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {82--90},
     publisher = {mathdoc},
     volume = {205},
     year = {1960},
     zbl = {0097.03005},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1960__205_150453/}
}