@article{MET_1972__18_175490,
     author = {E. Landh\"au{\ss}er},
     title = {Elliptische {Streufl\"achen} ebener {Punkthaufen.}},
     journal = {Metrika},
     pages = {6--14},
     publisher = {mathdoc},
     volume = {18},
     year = {1972},
     zbl = {0231.62074},
     url = {http://geodesic.mathdoc.fr/item/MET_1972__18_175490/}
}