Talk:Pocket set theory

Are there any secondary sources?
Apparently, pocket set theory was invented/developed by M. Randall Holmes (motivated by a suggestion of Rudy Rucker), and his entry on "Alternative Set Theories" in the Stanford Encyclopedia of Philosophy and his "not very serious notes" apparently are the only sources for this article. Are there any secondary sources at all? – Tea2min (talk) 11:26, 3 March 2017 (UTC)