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Author: Howard, Paul

• Herrlich, Horst; Howard, Paul; Keremedis, Kyriakos: On preimages of ultrafilters in ZF. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 57 (2016), issue 2, pp. 241-252
• Herrlich, Horst; Howard, Paul; Tachtsis, Eleftherios: On special partitions of Dedekind- and Russell-sets. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 53 (2012), issue 1, pp. 105-122