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Lee, Seongil, Choo, Hyunseung, Ha, Sungdo, Shin, In Chul (eds.) Computer-Human Interaction 8th Asia-Pacific Conference - APCHI 2008 July 6-9, 2008, Seoul, Korea.
Kim, Gunhee, Park, Jukyung, Han, Manchul, Park, Sehyung, Ha, Sungdo (2009): Context-aware communication support system with pictographic cards. In: Proceedings of 11th Conference on Human-computer interaction with mobile devices and services , 2009, . pp. 86. http://doi.acm.org/10.1145/1613858.1613958
Song, Kyohyun, Kim, Gunhee, Han, Inkyu, Lee, Jeongyoung, Park, Ji-Hyung, Ha, Sungdo (2011): CheMO: mixed object instruments and interactions for tangible chemistry experiments. In: Proceedings of ACM CHI 2011 Conference on Human Factors in Computing Systems , 2011, . pp. 2305-2310. http://dx.doi.org/10.1145/1979742.1979907