Ibragimov, Nazirbay, Steven R. Evett, Yusupbek Esanbekov, Bakhtiyor S. Kamilov, Lutfullo Mirzaev, and John P.A. Lamers. 2007a. "Water use efficiency of irrigated cotton in Uzbekistan under drip and furrow." Agricultural Water Management 90 (1-2):112-20.
