Hyun-Min Lee Dong-Jun Kim Heui-Kyung Yang Kyeong-Seop Kim Jeong-Whan Lee Eun-Jong Cha Kyung-Ah Kim Human Sensibility Evaluation Using Photoplethysmogram (PPG). 149-153 2009 CISIS http://doi.ieeecomputersociety.org/10.1109/CISIS.2009.132 conf/cisis/2009 db/conf/cisis/cisis2009.html#LeeKYKLCK09