When does the hidden butterfly not flicker?

Jing Liu, Soja-Marie Morgens, Robert C. Sumner, Luke Buschmann, Yu Zhang, James Davis. When does the hidden butterfly not flicker?. In SIGGRAPH Asia 2014 Technical Briefs, Shenzhen, China, December 3-6, 2014. pages 3, ACM, 2014. [doi]

Abstract

Abstract is missing.