William J. Mitchell. Sets Constructible from Sequences of Ultrafilters. Journal of Symbolic Logic, 39(1):57-66, 1974.
@article{Mitchell74,
title = {Sets Constructible from Sequences of Ultrafilters},
author = {William J. Mitchell},
year = {1974},
researchr = {https://researchr.org/publication/Mitchell74},
cites = {0},
citedby = {0},
journal = {Journal of Symbolic Logic},
volume = {39},
number = {1},
pages = {57-66},
}