1. Scientific Director and Irrigation and Remote Sensing Specialist, WaterWatch, Generaal Foulkesweg 28A, 6703 BS Wageningen, The Netherlands.
2. Water Management Specialist, SEBAL North America, Inc., 1772 Picasso Ave., Ste. E, Davis, CA 95618-0550.
3. President/Applications Engineer, SEBAL North America, Inc., 1772 Picasso Ave., Ste. E, Davis, CA 95618-0550.