[1]Thao, H.M. et al. 2017. Mineralogical characteristics of graphite ore from Bao Ha deposit, Lao Cai Province and proposing a wise use. <i>Vietnam Journal of Earth Sciences</i>. 39, 4 (Dec. 2017), 324–336. DOI:https://doi.org/10.15625/0866-7187/39/4/10728.