Khan, I.A, M.L. Deadman, and K. AI-Habsi. 2002. “Screening Potato Varieties for Tuber Production in Arid Regions: Effect of Planting Date on Yield Potential”. Journal of Agricultural and Marine Sciences [JAMS] 7 (1):53-57. https://journals.squ.edu.om/index.php/jams/article/view/594.