1. Grad. Res. Asst., Envir. Engrg. Program, Univ. of Southern California, Los Angeles, CA 90089-2531; Ctr. for Appl. Math. Sci., Dept. of Mathematics, Univ. of Southern California, Los Angeles, CA 90089-1113.
2. Prof., Envir. Engrg. Program, Univ. of Southern California, Los Angeles, CA 90089-2531.
3. Prof., Corrosion and Envir. Effects Lab., Dept. of Mat. Sci. and Engrg., Univ. of Southern California, Los Angeles, CA 90089-0241.
4. Prof., Ctr. for Appl. Math. Sci., Dept. of Mathematics, Univ. of Southern California, Los Angeles, CA 90089-1113.
5. Grad. Res. Asst., Corrosion and Envir. Effects Lab., Dept. of Mat. Sci. and Engrg., Univ. of Southern California, Los Angeles, CA 90089-0241.