El-Shouny, W., A. Abo-Kamar, and S. Ragy. “CHARACTERIZATION OF THE PARTIALLY PURIFIED PLANTARCIN SR18 PRODUCED BY LACTOBACILLUS PLANTARUM SR18”. Journal of Microbiology, Biotechnology and Food Sciences, vol. 2, no. 5, Apr. 2013, pp. 2301-5, https://office2.jmbfs.org/index.php/JMBFS/article/view/7112.