@article{MET_1973__20_175597,
     author = {E. Landh\"au{\ss}er},
     title = {Streuellipsoide r\"aumlicher {Punkthaufen.}},
     journal = {Metrika},
     pages = {177--180},
     publisher = {mathdoc},
     volume = {20},
     year = {1973},
     url = {http://geodesic.mathdoc.fr/item/MET_1973__20_175597/}
}