%0 Journal Article %A Mehlhos, St. %T Simple counter examples for the unsolvability of the Fermat- and Steiner-Weber-problem by compass and ruler. %J Beiträge zur Algebra und Geometrie %D 2000 %P 151 %V 41 %N 1 %I mathdoc %U https://geodesic-test.mathdoc.fr/item/BAG_2000__41_1_228294/ %G en %F BAG_2000__41_1_228294