Pujate, Agnese, Edīte Pujāte, and Sergejs Kodors. “CO2 EMISSIONS AND CLIMATE CHANGE IN THE WORLD 1970-2013”. HUMAN. ENVIRONMENT. TECHNOLOGIES. Proceedings of the Students International Scientific and Practical Conference, no. 20 (April 20, 2016): 313–318. Accessed May 2, 2024. https://journals.rta.lv/index.php/HET/article/view/3516.