%0 Journal Article %A Pelletier, Donald H. %T Easton's Results Via Iterated Boolean-Valued Extensions %J Canadian journal of mathematics %D 1974 %P 820-828 %V 26 %N 4 %U http://geodesic.mathdoc.fr/articles/10.4153/CJM-1974-077-7/ %R 10.4153/CJM-1974-077-7 %F 10_4153_CJM_1974_077_7