Benkyō to ibashoHideki Watanabe, Hyŏn-ch'ŏl Kim, Shigeki Matsuda, Hirohisa Takenoshita · First published 2013Open the Tome
Econophysics Approaches to Large-Scale Business Data and Financial CrisisMisako Takayasu, Tsutomu Watanabe, Hideki Takayasu · First published 2010Open the Tome
Tabunka tasedai kōsa sekai ni okeru shimin ishiki no keiseiHideki Watanabe, Ken Arisue · First published 2008Open the Tome