Hatice Cetinkaya, et al. “The Effects of Pretreatment of Giberellic Acid, Alpha Tocopherol and Ascorbic Acid on Germination in Maize Seeds”. Global Journal of Science Frontier Research, vol. 21, no. C3, Mar. 2021, pp. 39-46, https://journalofscience.org/index.php/GJSFR/article/view/2973.