Wu, Xiangrui, Xinhua Peng, Xiongzi Dong, and Zhihong Dai. 2011. “Synthesis of 5-Bromo-2-Furfural under Solvent-Free Conditions Using 1-Butyl-3-Methylimidazolium Tribromide As Brominating Agent”. Asian Journal of Chemistry 24 (2):927-28. https://asianpubs.org/index.php/ajchem/article/view/8672.