Andreas Blass. Selective ultrafilters and homogeneity. Annals of pure and applied logic, vol. 38 (1988), pp. 215–255. - Claude Laflamme. Forcing with filters and complete combinatorics. Annals of pure and applied logic, vol. 42 (1989), pp. 125–163.
Peter Nyikos · Journal of Symbolic Logic · 1991
Andreas Blass. Selective ultrafilters and homogeneity. Annals of pure and applied logic, vol. 38 (1988), pp. 215–255. - Claude Laflamme. Forcing with filters and complete combinatorics. Annals of pure and applied logic, vol. 42 (1989), pp. 125–163. - Volume 56 Issue 4