Ahmed AL-Oqab, M., S. Zaid, and Y. Al-Ammouri. “Effects of Basic Media and Plant Growth Regulators on Direct-Somatic Embryogenesis Induction in Vegetative Strains Obtained from the Tissue Culture of Digitalis Purpurea”. Emirates Journal of Food and Agriculture, vol. 35, no. 2, Mar. 2023, doi:10.9755/ejfa.2023.v35.i2.3008.