1. Abdullaev , I. D. Molden B. Matyakubov 2003 “Best” water conservation practices and their impact on water productivity in the Syr Darya River Basin Int. Water Manage. Inst. Colombo, Sri Lanka
2. Allen , R. G. L. S. Pereira D. Raes M. Smith 1998 Crop evapotranspiration-Guidelines for computing crop water requirements Irrig. Drain. Pap. 56
3. Hussain , I. R. Sakthivadivel U. Amarasinghe M. Mudasser D. Molden 2003 Land and water productivity of wheat in the western Indo-Gangetic plains of India and Pakistan: A comparative analysis Res. Rep. 65 Int. Water Manage. Inst. Colombo, Sri Lanka
4. Interstate Commission on Water Coordination (ICWC) 1997 WUFMAS-Water use and farm management survey Tashkent, Uzbekistan
5. Khorst , M. N. Mirzayev G. Stulina 2002 Participation in water conservation: Regional monitoring of the II stage of competition-Ways of water conservation Int. Water Manage. Inst. Tashkent, Uzbekistan