1. On connected irresolvable Hausdorff spaces;Anderson;Proc. Amer. Math. Soc.,1965
2. Ultrafilters and irresolvable spaces;El'kin;Vestnik Moskov. Univ. Ser. I Mat. Meh.,1969
3. General Topology;Engelking,1977
4. Diagonal Constructions, Löb's Formula and Cantor's Scattered Spaces;Esakia,1981
5. McKinsey's modal system half a century later;Esakia,1995