T. Alkansaa M. Ahmed, E. M. Mutwali, and E. A. Salih, “The Effect of Seed Size and Burial Depth on the Germination, Growth and Yield of Sunflower (Helianthus annus L.)”, ASRJETS-Journal, vol. 53, no. 1, pp. 75–82, Mar. 2019, Accessed: Sep. 24, 2025. [Online]. Available: https://asrjetsjournal.org/American_Scientific_Journal/article/view/4403