S. AL-Saleh, H., and M. M. Al-Noaimy. “The Effect of 2,4-D and Kin and Their Interaction With Sulphanilamide in Initiation and Growth of Black Cumin Nigella Sativa L. Callus”. Rafidain Journal of Science, vol. 21, no. 5, July 2010, pp. 1-23, doi:10.33899/rjs.2010.36953.