@article{Ryo Fukuda2015, title={Peculiarity on Structure of Metropolitan Areas Based on Networks of Inter-firm Deals}, author={Ryo Fukuda and Tetsuo Kidokoro and Ryo Sato}, journal={Journal of the City Planning Institute of Japan}, volume={50}, number={3}, pages={560-567}, year={2015}, doi={10.11361/journalcpij.50.560} }