1. Near coherence of filters, I: Cofinal equivalence of models of arithmetic;Blass;Notre Dame J. Formal Logic,1986
2. Near coherence of filters, II: Applications to operator ideals, the Stone–Čech remainder of a half-line, order ideals of sequences, and slenderness of groups;Blass;Trans. Amer. Math. Soc.,1987
3. Selective ultrafilters and homogeneity;Blass;Ann. Pure Appl. Logic,1988
4. Applications of superperfect forcing and its relatives;Blass,1989
5. On strongly summable ultrafilters and union ultrafilters;Blass;Trans. Amer. Math. Soc.,1987