Kagawa, Masayuki
Tojima, Hirokazu
Matsui, Takemi
Funding for this research was provided by:
The Ministry of Internal Affairs and Communications (MIC, Japan), Strategic Information and Communications R&D Promotion Programme (SCOPE) (0159-0120, 0159-0120)
Japan Society for the Promotion of Science (JP) KAKENHI (26350507)