1. 13) N. D. Tomashov: “Theory of Corrosion and Protection of Metals”, p. 373, Macmillan (1966).
2. 14) F. Theiler: Corros. Sci., 14, 405 (1974).
3. 15) “International Critical Tables” Vol. I., p. 67 McGram-Hill (1926).
4. 16) M. S. Jacobson: “I Mech E 1974, Corrosion of Motor Vehicles” p. 35, The Institution of Mechanical Engineers (1974).
5. 17) G. E. Svenson: “I Mech E 1974, Corrosion of Motor Vehicles” p. 29.