1. Martin's axiom does not imply that every ℵ1-dense sets of reals are isomorphic;Abraham;Israel J. Math.,1981
2. Definable forcing and regularity properties of projective sets of reals;Bagaria,1991
3. Fragments of Martin's axiom and gD31 sets of reals;Bagaria;Ann. Pure Appl. Logic,1994
4. Amoeba forcing, Suslin absoluteness, and additivity of measure;Bagaria,1992
5. J. Bagaria and W.H. Woodin, Δn1 sets of reals, J. Symbol. Logic, to appear.