Voronoi Diagram in the Flow Field. - Tetsushi Nishida; Kokichi Sugihara (ISAAC, 2003)

Approximation of the Boat-Sail Voronoi Diagram and Its Application. - Tetsushi Nishida; Kokichi Sugihara (ICCSA (3), 2004)

Direct Diffusion Method for the Construction of Generalized Voronoi Diagrams. - Tetsushi Nishida; Shingo Ono; Kokichi Sugihara (ISVD, 2007)

Boat-Sail Voronoi Diagram and its Application. - Tetsushi Nishida; Kokichi Sugihara (Int. J. Comput. Geom. Appl., 2009)

Spatial Analysis of the Global Digital Divide. - Tetsushi Nishida; James B. Pick (AMCIS, 2011)

Spatial and Multivariate Analysis of Japan's Prefectural Digital Divide. - Tetsushi Nishida; James B. Pick; Avijit Sarkar (AMCIS, 2012)

Determinants of Worldwide Technology Utilization and Availability a Geospatial and Regression Analysis. - James B. Pick; Tetsushi Nishida (HICSS, 2012)

Determinants of China's Technology Availability and Utilization 2006-2009: A Spatial Analysis. - James B. Pick; Tetsushi Nishida; Xi Zhang (Inf. Soc., 2013)