1. Postdoctoral Res. Scholar, Civ. Engrg. Dept., Univ. of Kentucky, Lexington, KY 40506; formerly, Res. Assoc., Centre for Water Resour., Anna Univ., Chennai 600 025, India. E-mail: neelt@engr.uky.edu
2. Emeritus Prof., Centre for Water Resour., Anna Univ., Chennai 600 025, India. E-mail: nvpundari@hotmail.com