L. Kordy and S. Alfalluji, “ECONOMIC EFFICIENCY OF CORN CROP CULTIVATING (AL-NAHRAIN HYBRID) IN SALAHDIN AND KIRKUK GOVERNORATES IN AGRICULTURAL SEASON 2023”, Iraqi J. Agric. Sci., vol. 57, no. 6, pp. 1718–1730, Jun. 2026, doi: 10.36103/a9v7r538.