Transport development and the growth of cities (with K. Takeda)
Culture, tastes, and market integration: Testing the localized tastes hypothesis. CESifo Working Paper No. 11872, 2025 (with J. Wrona)
Sustainability of cities under declining population and decreasing distance frictions: The case of Japan. arXiv:2505.08333, 2025 (with D. Murakami).
Orign of power laws and their spatial fractal structure for city-size distributions. arXiv:2207.05346, 2023 (with T. Akamatsu, Y. Takayama & M. Osawa).
Spatial scale of agglomeration and dispersion: Number, spacing, and the spatial extent of cities. arXiv:191205113, 2024 (with T. Akamatsu, M. Osawa, Y. Takayama) (Previous versions: Multimodal agglomeration in economic geography. arXiv:191205113v3, 2021; Endogenous agglomeration in a many-region world. arXiv: 1912.05113v2, 2020; Spatial scale of agglomerations: Theoretical foundations and empirical implications. DP84145, Munich Personal RePEc Archives, 2018)
Collaborative knowledge exchange promotes innovation. arXiv:2210.01392, 2022 (with J. Newton, S. Sakaguchi). Previous versions: Creation of knowledge through exchanges of knowledge: Evidence from Japanese patent data. arXiv:1908.01256, 2020 (with S. Sakaguchi).
How Masa Fujita shaped the present of spatial economics and how he will inspire the future. In the Special Issue in honor of Masahisa Fujita. Japanese Economic Review 2025; DOI: 10.1007/s42973-025-00209-5 (with G. Duranton).
Centrality bias in inter-city trade. Regional Science and Urban Economics 109: 104060, 2024; DOI: 10.1016/j.regsciurbeco.2024.104060 (with J. Wrona) (An older working paper version: . Ruhr Economic Papers #1013, 2023)
Common power laws for cities and spatial fractal structures. Proceedings of the National Academy of Sciences of the United States of America, 117 (12): 6469-6475; first published on line on March 6, 2020; DOI: 10.1073/pnas.1913014117 (with T.E. Smith, W.-T. Hsu). Movie
Spatial pattern and city size distribution. In Oxford Research Encyclopedia of Economics and Finance, February 2020; DOI: 10.1093/acrefore/9780190625979.013.295 [DP version]
Central place analysis. In The Wiley-Blackwell Encyclopedia of Urban and Regional Studies, A. M. Orum (Ed.), April 15, 2019; DOI: 10.1002/9781118568446.eurs0039 [DP version]
Agglomeration. In The Wiley-Blackwell Encyclopedia of Urban and Regional Studies, A. M. Orum (Ed.), April 15, 2019; DOI: 10.1002/9781118568446.eurs0003 [DP version]
Evolution of sizes and industrial structure of cities in Japan from 1980 to 2010: Constant churning and persistent regularity. Asian Development Review 34(2): 86-113, 2017; DOI: 10.1162/adev_a_00096 (DP version, Summary in Japanese)
Beyond urban form: How Masahisa Fujita shapes us. International Journal of Economic Theory 13: 5-28, 2017; DOI: 10.1111/ijet.12115 (with M. Berliant) [DP version]
On the spatial scale of industrial agglomerations. Journal of Urban Economics 89: 1-20, 2015; DOI: 10.1016/j.jue.2015.01.006 (with T.E. Smith) [DP version]
A probabilistic modeling approach to the detection of industrial agglomerations. Journal of Economic Geography 14(3): 547-588, 2014; DOI: 10.1093/jeg/lbs062 (with T.E. Smith)
Increasing returns in transportation and the formation of hubs. Journal of Economic Geography 12(4): 877-897, 2012; DOI: 10.1093/jeg/lbr028
An industrial agglomeration approach to central place and city size regularities. Journal of Regional Science 51(4): 694-731, 2011; DOI: 10.1111/j.1467-9787.2011.00715.x (with T.E. Smith)
A reconsideration of the NAS rule from an industrial agglomeration perspective. Brookings-Wharton Papers on Urban Affairs, Vol. 2009: 175-216, 2009; Project MUSE https://www.muse.jhu.edu/article/271144 (with T.E. Smith)
Monocentric versus polycentric models in urban economics. In The New Palgrave Dictionary of Economics, 2nd ed., S. N. Durlauf and L. E. Blume (Eds.), Palgrave Macmillan: 754-756, 2008; DOI: 10.1057/978-1-349-95121-5_2454-1 [DP version]
The number-average size rule: A new empirical relationship between industrial location and city size. Journal of Regional Science 48(1): 165-211, 2008; DOI: 10.1111/j.1467-9787.2008.00550.x (with K. Nishikimi, T.E. Smith)
A divergence statistic for industrial localization. Review of Economics and Statistics 87(4): 635-651, 2005; DOI: 10.1162/003465305775098170 (with K. Nishikimi, T.E. Smith)
Frontiers of the new economic geography. Papers in Regional Science 84(3): 377-405, 2005; DOI: 10.1111/j.1435-5957.2005.00021.x (with M. Fujita)
Transport development and the evolution of economic geography. Portuguese Economic Journal 4: 129-159, 2005; DOI: 10.1007/s10258-005-0042-6 (with M. Fujita)
Skills, agglomeration, and segmentation. European Economic Review 49(1): 201-225, 2005; DOI: 10.1016/S0014-2921(03)00018-7 (with A. Turrini)
Spatial distribution of economic activities in Japan and China. in Handbook of Urban and Regional Economics Vol. 4, J. V. Henderson and J.-F. Thisse (Eds.): 2911-2977, 2004; DOI: 10.1016/S1574-0080(04)80022-1 (with M. Fujita, J. V. Henderson, Y. Kanemoto)
Economies of transport density and industrial agglomeration. Regional Science and Urban Economics 32(2): 167-200, 2002; DOI: 10.1016/S0166-0462(01)00078-3 (with K. Nishikimi)
On the evolution of hierarchical urban systems. European Economic Review 43(2): 209-251, 1999; DOI: 10.1016/S0014-2921(98)00066-X (with M. Fujita, P. Krugman)
On the dynamics of frontier economies: Endogenous growth or the self-organization of a dissipative system? Annals of Regional Science 34: 39-62, 1998; DOI: 10.1007/s001680050062 (with M. Fujita)
Structural stability and the evolution of urban systems. Regional Science and Urban Economics 27(4-5): 399-442, 1997; DOI: 10.1016/S0166-0462(97)80004-X (with M. Fujita)
A modeling of megalopolis formation: The maturing of city systems. Journal of Urban Economics 42(1): 133-157, 1997; DOI: 10.1006/juec.1996.2018
The role of ports in the making of major cities: Self-organization and hub effect. Journal of Development Economics 49: 93-120, 1996; DOI: 10.1016/0304-3878(95)00054-2 (with M. Fujita) (Older version)
Inter-city trade. Vox Column, August 16, 2019 (with J. Wrona)
Spatial pattern and city size distribution: Evidence from 450 Japanese cities. Vox Column, August 11, 2019
Constant churning and persistent regularity in population and industrial locations: Evidence from Japan. Vox Column (August 25, 2017)