Yang, Zhenshan, Jianming Cai, Michael Dunford, and Douglas Webster. “Rethinking of the Relationship Between Agriculture and the ‘urban’ Economy in Beijing: An Input-Output Approach”. Technological and Economic Development of Economy 20, no. 4 (December 16, 2014): 624-647. Accessed November 9, 2024. https://jcem.vgtu.lt/index.php/TEDE/article/view/3433.