Aljibouri, A. M. ., Zokian, S. A. Y. . and Almusawi, A. H. . (2014) “Response of four medical plants of Euphorbia species in callus initiation in vitro”, Journal of Biotechnology Research Center, 8(1), pp. 66–71. doi: 10.24126/jobrc.2014.8.1.310.