%0 Journal Article %A James Baumgartner %T Αll $ℵ_1$-dense sets of reals can be isomorphic %J Fundamenta Mathematicae %D 1973 %P 101-106 %V 79 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/fm-79-2-101-106/ %R 10.4064/fm-79-2-101-106 %G en %F 10_4064_fm_79_2_101_106