Facial expression recognition from line-based caricatures
IEEE Transactions on Systems Man and Cybernetics - Part A Systems and Humans (2003) - Comments
doi: 10.1109/tsmca.2003.817057  issn: 1083-4427 

Yongsheng Gao, M.K.H. Leung, Siu Cheung Hui, M.W. Tananda