AUTHOR=Jeong Eui-Kuk , Kim Yeongmin , Jung Youn-Young , Lee Kwang-Sik , Choi Seung-Hyun , Bong Yeon-Sik , Shin Woo-Jin 

TITLE=Carbon and nitrogen isotope characterization of imported coals in South Korea

JOURNAL=Frontiers in Environmental Science

VOLUME=11

YEAR=2023

URL=https://www.frontiersin.org/journals/environmental-science/articles/10.3389/fenvs.2023.1279004

DOI=10.3389/fenvs.2023.1279004

ISSN=2296-665X