L. B. Hassan, et al. “Pigment Production in Callus Culture of ‘Karandafi’ Red Sorghum (Sorghum Bicolor (L.) Moench). A Probable Cure for Sickle Cell Anaemia”. Recent Research Advances in Biology Vol. 8, May 2021, pp. 32-38, doi:10.9734/bpi/rrab/v8/8410D.