Masahiro Sawai, Yoshifumi Okada, and Tomomasa Nagashima. “An Efficient Method for Relating Various Human Impressions to Physical Features”. International Journal of Computer Information Systems and Industrial Management Applications 3 (January 1, 2011): 6. Accessed May 4, 2026. https://cspub-ijcisim.org/index.php/ijcisim/article/view/77.