AUTHOR=Miao Shuguang , Liu Xiang , Zhang Yue , Li SuWen , Ding Enjie TITLE=Research on identification method of bituminous coal based on terahertz time-domain spectroscopy JOURNAL=Frontiers in Earth Science VOLUME=Volume 13 - 2025 YEAR=2025 URL=https://www.frontiersin.org/journals/earth-science/articles/10.3389/feart.2025.1503835 DOI=10.3389/feart.2025.1503835 ISSN=2296-6463