Visualization of patent information using text mining tools and the R statistical language 論文 Toshiyuki Ando ·2009-01-01 ·『Journal of Information Processing and Management』 52(1) pp. 20-31 doi:10.1241/johokanri.52.20
Government-compiled Regional Geographies and Nation-state Formation in Early Mei ji Japan 論文 Toshiyuki Shimazu ·2002-01-01 ·『Chirigaku hyouron』 75(2) pp. 88-113 doi:10.4157/grj.75.88