1. There may be simple Pℵ1 and Pℵ2-points and the Rudin-Keisler order may be downward directed;Blass;Ann. Pure Appl. Logic,1987
2. Two classes of Fréchet spaces;Dow,1990
3. New proofs of the consistency of the normal Moore space conjecture I;Dow;Topology Appl.,1990
4. Open problems on βω;Hart,1990
5. Combinatorics;Kunen,1977