Gholipouri, Mohammad Sedghi, Beytollah Vahedi, Abdolghayoum. “Effect of Planting Pattern on Radiation Use Efficiency, Yield and Yield Components of Sunflower”. Recent Research in Science and Technology 2, no. 2 (January 9, 2010). Accessed October 1, 2025. https://www.updatepublishing.com/journal/index.php/rrst/article/view/374.