Gözener, Bilge, and Oğuz Parlakay. “Econometric Analysis of Effects of Nitrogenous Fertilizer Usage on Tomato Yield in Tokat, Turkey”. Turkish Journal of Agriculture - Food Science and Technology 5, no. 4 (April 26, 2017): 441–444. Accessed April 28, 2024. https://agrifoodscience.com/index.php/TURJAF/article/view/1180.