Phuong Thoa, N., N. Thai Hoang, and L. Xuan Que. “ELECTROCHEMICAL IMPEDANCE MEASUREMENTS ON CASING STEEL IN SEA WATER : EFFECT OF ALUMINIUM AND FERRIC SULFATES ON THE CORROSION BEHAVIOR”. Science and Technology Development Journal, Vol. 2, no. 4&5, May 1999, pp. 90-1, doi:https://doi.org/10.32508/stdj.v2i4&5.3634.