%0 Journal Article %A Jeffry L. Hirst %T Representations of Reals in Reverse Mathematics %J Bulletin of the Polish Academy of Sciences. Mathematics %D 2007 %P 303-316 %V 55 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/ba55-4-2/ %R 10.4064/ba55-4-2 %G en %F 10_4064_ba55_4_2