XIONG Xian-qing, QIAN Shao-ping, SHENG Kui-chuan, HE Yong, FANG Lu, WU Zhi-hui. Predicting Gross Calorific Value of Agricultural Feedstock Based on Proximate/Ultimate Analysis and Visible-Near Infrared Spectroscopy[J]. Spectroscopy and Spectral Analysis, 2017, 37(5): 1622