%0 Journal Article %A Arthur W. Apter %T Stationary reflection and level by level equivalence %J Colloquium Mathematicum %D 2009 %P 113-128 %V 115 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/cm115-1-10/ %R 10.4064/cm115-1-10 %G en %F 10_4064_cm115_1_10