Vassilevska-Ivanova, Roumiana Dimova, Lydia Shtereva, Ira Stancheva, and Maria Geneva. “Drought Stress Responses of Sunflower Germplasm Developed After Wide Hybridization”. Turkish Journal of Agriculture - Food Science and Technology 4, no. 10 (October 5, 2016): 859–866. Accessed April 28, 2024. https://www.agrifoodscience.com/index.php/TURJAF/article/view/791.