1.
Ubaidillah AS, Daryono LR, Idrus A, Warmada IW, Knorr K. Characteristics and Structure of Hopeite-Mineral (Type A3(PO4)2.4H2O). AJAS [Internet]. 2019Feb.22 [cited 2020Nov.26];7(1). Available from: https://www.ajouronline.com/index.php/AJAS/article/view/5707