Hassen Abdulahi, Ed Sarobol, Vichan Vichukit and Chairerk Suwannarat (2005) “) in Eastern Ethiopia”., Agriculture and Natural Resources. Bangkok, Thailand, 39(4), pp. 560–568. available at: https://li01.tci-thaijo.org/index.php/anres/article/view/243399 (accessed: 26 August 2026).