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2. Agents with faces;Koda;The effects of personification of agents,1996
3. Understanding comics;McCloud;Harper Perennial,1993
4. Brain activity associated with emoticons: An fMRI study. Effects of facial expressions in personal communications over a computer network;Yuasa;Trans IEEJ,2007
5. What makes a portrait attractive;Suzuki;12th Forum of Japan Academy of Facial Studies,2007