Wang Yong, Xiang Cheng, Li Yong. Classification of Coal Origin of Fulvic Acid According to Spectroscopic and Chemometric analyses Coupled with Discriminant Analysis and Machine Learning Methods. DE [Internet]. 2020Feb.29 [cited 2024May7];:616 -623. Available from: http://thedesignengineering.com/index.php/DE/article/view/293