%0 Journal Article %A W. Marek %T ω-models of second order arithmetic and admissible sets %J Fundamenta Mathematicae %D 1978 %P 103-120 %V 98 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/fm-98-2-103-120/ %R 10.4064/fm-98-2-103-120 %G en %F 10_4064_fm_98_2_103_120