Li, Z., X. Chen, S. Li, and Z. Wang. “Effect of Nickel Chloride on Arabidopsis Genomic DNA and Methylation of 18S RDNA”. Electronic Journal of Biotechnology, vol. 18, no. 1, Jan. 2015, https://www.ejbiotechnology.info/index.php/ejbiotechnology/article/view/2014.12.004.