D. H. Fremlin, Peter Nyikos. Saturating Ultrafilters on N. Journal of Symbolic Logic, 54(3):708-718, 1989.
@article{FremlinN89, title = {Saturating Ultrafilters on N}, author = {D. H. Fremlin and Peter Nyikos}, year = {1989}, researchr = {https://researchr.org/publication/FremlinN89}, cites = {0}, citedby = {0}, journal = {Journal of Symbolic Logic}, volume = {54}, number = {3}, pages = {708-718}, }