Yaqiong, Duan, Hou Quanhua, Xiaoqing Zhang, and Li Weijia. 2022. “Review and Enlightenment of Intensive Land Use in Built-Up Area Based on Low-Carbon Travel”. Journal of Mines, Metals and Fuels 66 (9):704-13. http://www.informaticsjournals.com/index.php/jmmf/article/view/31787.