Masahiro Fujita, Yuki Ikeya, Junya Kani, Masakatsu Nishigaki. Chimera CAPTCHA: A Proposal of CAPTCHA Using Strangeness in Merged Objects. In Theo Tryfonas, Ioannis G. Askoxylakis, editors, Human Aspects of Information Security, Privacy, and Trust - Third International Conference, HAS 2015, Held as Part of HCI International 2015, Los Angeles, CA, USA, August 2-7, 2015. Proceedings. Volume 9190 of Lecture Notes in Computer Science, pages 48-58, Springer, 2015. [doi]