Hoang, N., Ogasawara, M., Huong, T.T., Hung, P.V., Thu, N.T., Thang, C.S., Dang, P.T. and Xuan, P.T. 2015. Geochemistry of Neogene Basalts in the Nghia Dan district, western Nghe An. Vietnam Journal of Earth Sciences. 36, 4 (Jun. 2015), 403–412. DOI:https://doi.org/10.15625/0866-7187/36/4/6428.