@article{Sh:454,
author = {Shelah, Saharon},
ams-subject = {(54A25)},
fromwhere = {IL},
journal = {Israel Journal of Mathematics},
review = {MR 94f:54007},
note = { arxiv:math/9308217 },
pages = {369--374},
title = {{Number of open sets for a topology with a countable basis}},
volume = {83},
year = {1993},
}

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