Nguyen Hoang Tan Truong, Thi Cam Huong Le, Duong Xuan Bao Ha, and Thi Van Tran. “Remote Sensing Technology-Based Estimation of Atmospheric CO2 Concentration to Support Efforts to Reduce Greenhouse Gas Emissions”. Vietnam Journal of Science, Technology and Engineering, vol. 61, no. 4, Dec. 2019, pp. 88-94, doi:10.31276/VJSTE.61(4).88-94.