Le, V.D. et al. 2021. Synthesis of Zeolitic - Imidazolate Framework – 67 in Ethanol by Using Ultrasonication. JST: Engineering And Technology For Sustainable Development. 31, 1 (Mar. 2021), 10–15. DOI:https://doi.org/10.51316/jst.148.etsd.2021.31.1.3.