Haruyasu Asahara, Eiko Mochizuki, Takumi Oshima, ‘‘Conformational Analysis in Reversible Intramolecular [2+2] Photocycloaddition of Diphenylbicyclo[4.2.0]oct-3-ene-2,5-diones’’, International KYOTO Conference on New Aspects of Organic Chemistry-10, Kyoto, Japan, November 2006 (poster session).