@article{BAG_1990__30_138465,
     author = {W. B\"ORNER},
     title = {Eine {Extremalaufgabe} \"uber {Sechsecke} zur {Berechnung} spezieller {Banach-Masur-Abst\"ande}},
     journal = {Beitr\"age zur Algebra und Geometrie},
     pages = {169--180},
     publisher = {mathdoc},
     volume = {30},
     year = {1990},
     language = {de},
     url = {http://geodesic.mathdoc.fr/item/BAG_1990__30_138465/}
}