Thanh, Nguyen, Do Son Hai, Tran Thi Dung, Nguyen Thi Mai, & Le Hai Dang. " Study on the Use of the Ionic Liquid 1-butyl-3-methylimidazolium Hydroxide in Synthesis of Substituted 4-aryl-4H-chromenes." VNU Journal of Science: Natural Sciences and Technology [Online], 32.3 (2016): n. pag. Web. 22 Nov. 2024