Shlahi, S. A. ., & Al- Hattab, Z. N. H. . (2009). Effect of N-methyl-N-nitro-N-nitrosoguanidine (NTG) on callus induction and survival rate on mature embryos of beans (Phaseolus vulgaris). Journal of Biotechnology Research Center, 3(2), 91–98. https://doi.org/10.24126/jobrc.2009.3.2.76