Masashi Aizawa，Yuichi Sei，Yasuyuki Tahara，Ryohei Orihara，Akihiko Ohsuga: Do You Like Sclera? Sclera-region Detection and Colorization for Anime Character Line Drawings，International Journal of Networked and Distributed Computing，Volume 7, Issue 3, August 2019, Pages 113-120 (2019.7)