Abdullaev, Iskandar; ul Hassan, Mehmood; Manthrithilake, Herath; Yakubov, Murat(International Water Management Institute (IWMI), Colombo, Sri Lanka, 2006)
Murray-Rust, Hammond; Abdullaev, Iskandar; ul Hassan, Mehmood; Horinkova, Vilma(International Water Management Institute (IWMI), Colombo, Sri Lanka, 2003)