Barbero-Navarro, Ignacio, et al. “In Vitro Antimicrobial Effects of 3 Root Canal Sealers on Actinomyces Radicidentis”. Puerto Rico Health Sciences Journal, vol. 33, no. 2, May 2014, https://prhsj.rcm.upr.edu/index.php/prhsj/article/view/894.