Zhao, Junfu. “Investigating the Asymmetric Core/Periphery Structure of International Labor Time Flows: A New Network Approach to Studying the World-System”. Journal of World-Systems Research 27, no. 1 (March 21, 2021): 231-264. Accessed April 14, 2021. http://jwsr.pitt.edu/ojs/jwsr/article/view/1006.