Lan TT, Duong NA, Anh PL, Man TT. Research on fabrication of non-calcined geopolymer ceramics from kaolin Tung Ba, Vi Xuyen, Ha Giang. Vietnam J. Earth Sci. [Internet]. 2019 Aug. 16 [cited 2024 Apr. 20];41(4):388-402. Available from: https://vjs.ac.vn/index.php/jse/article/view/14371