Kunimi, Takara, and Hajime Seya. “Identification of the Geographical Extent of an Area Benefiting from a Transportation Project: A Generalized Synthetic Control”. Journal of Transport and Land Use 14, no. 1 (January 5, 2021): 25-45. Accessed April 16, 2021. http://jtlu.org/index.php/jtlu/article/view/1784.