A characterization of long-short trading strategies based on cointegration. - Yoshinori Kawasaki; Shigeru Tachiki; Hideo Udaka; Tomoaki Hirano (CIFEr, 2003)

Rendering method of multiple reflections on a semi-cylindrical mirror. - Nobuhiko Mukai; Tomoaki Hirano (SIGGRAPH ASIA (Posters), 2010)