@misc{oai:repository.dl.itc.u-tokyo.ac.jp:00041846,
 author = {Dietz, Richard},
 month = {Mar},
 note = {The second 「論数哲」(PhilLogMath) workshop, 14 March 2012, Seiryo Kaikan, Tokyo},
 title = {Comparative Concepts},
 year = {2012}
}