Grigori Mints. S4 is Topologically Complete for (0, 1): a Short Proof. Logic Journal of the IGPL, 14(1):63-71, 2006. [doi]
@article{Mints06,
title = {S4 is Topologically Complete for (0, 1): a Short Proof},
author = {Grigori Mints},
year = {2006},
doi = {10.1093/jigpal/jzk004},
url = {http://dx.doi.org/10.1093/jigpal/jzk004},
tags = {completeness},
researchr = {https://researchr.org/publication/Mints06},
cites = {0},
citedby = {0},
journal = {Logic Journal of the IGPL},
volume = {14},
number = {1},
pages = {63-71},
}