1. 1. B. P. Boffardi and G. W. Schweitzer, CORROSION/85, Paper 132, National Association of Corrosion Engineers, TX (1985).
2. 2. E. E. Smyke, H. E. Hoots, K. F. Fivizzani, and K. E. Fulks, CORROSION/88, Paper No.14, National Association of Corrosion Engineers, Houston, TX, (1988).
3. 3. Z. Amjad, Tenside Surfactants Detergents, 34,102, 1997.