Phuc, L.T., Tuyen, P.T.K., Nga, K.T. and Nga, N.T. 2014. Potential geoheritages in Lao Cai - Suggestions preservation and development. Vietnam Journal of Earth Sciences. 36, 1 (Jun. 2014), 41–50. DOI:https://doi.org/10.15625/0866-7187/36/1/4136.