1. Research Scholar, Dept. of Agricultural and Food Engineering, Indian Institute of Technology, Kharagpur WB 721 302, India.
2. Associate Professor, Dept. of Agricultural and Food Engineering, Indian Institute of Technology, Kharagpur WB 721 302, India.
3. Professor, Dept. of Biological and Agricultural Engineering and Dept. of Hydrologic Science, Univ. of California, Davis, CA 95616.
4. Emeritus Irrigation Engineer, Dept. of Hydrologic Science, Univ. of California, Davis, CA 95616.