Buanawaty P, Hastiadi FF. The Impact of Kyoto Protocol on Environment Quality in the Free Trade Era: The Case of G20 Countries. IJEFI [Internet]. 2017 Jun. 29 [cited 2024 Nov. 24];7(3):36-42. Available from: https://mail.econjournals.com/index.php/ijefi/article/view/4346