Nasser, Huda A., and Zahra M. Al-Khafaji. “Effect of Some Transition Metals and Selenium on Germination of Eruca Sativa Seeds”. Journal of Biotechnology Research Center (JOBRC), vol. 4, no. 2, June 2010, pp. 54-61, doi:10.24126/jobrc.2010.4.2.123.