Tuan, H.A., Cuong, T.X., Tuan, N.Q., Quan, N.D. and Nhuan, D.V. 2014. The application of vertical electric sounding for defining geological structure and coal distribution in the Cenozoic sediments in An Nhon - Binh Dinh area, central Vietnam. Petrovietnam Journal. 8, (Aug. 2014), 29-34.