Kim, M. Yvonne, and Daniel Zilberman. “DNA Methylation as a System of Plant Genomic Immunity.”10.1016/j.tplants.2014.01.014__Trends in Plant Science, vol. 19, no. 5, Elsevier, 2014, pp. 320–26, doi:10.1016/j.tplants.2014.01.014.