Yahya, Rana Tariq, and Hanaa Saeed Al-Salih. “Determination of Anthocyanins Content in Prosopis Farcta L. Callus Cultures”. Journal of Biotechnology Research Center, vol. 8, no. 3, Sept. 2014, pp. 59-63, doi:10.24126/jobrc.2014.8.3.362.