N. minh Khoi, V. T. Anh, P. Q. Hiep, N. V. Quang, and N. V. Pho, “CHARACTERISTICS OF ENVIRONMENTAL GEOCHEMISTRY IN SURFACE SEDIMENT OF TAM GIANG - CAU HAI LAGOON FORMATIONS (THUA THIEN HUE PROVINCE)”, VJMST, vol. 7, no. 1, Mar. 2007.