Motamed, Morteza, Rezvan, Shahram, Alipour, Zarin Taj, Laie, Ghanbar, سینکی, جعفرمسعود (2023). Evaluation of Growth, Yield, Oil Content, Irrigation Water Productivity and Nitrogen Use Efficiency of Sunflower (Helianthus annuus L.) at Different Levels of Plant Density and Nitrogen Content. *Journal of Crop Ecophysiology*, 17(67), 315-332. 10.82592/jcep.2023.1106677