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Charles H.Ch.H.StuartCharles H.Ch.H., Scott A.S.A.SchwartzScott A.S.A., Thomas J.T.J.BeesonThomas J.T.J., Christopher B.Ch.B.OwatzChristopher B.Ch.B., Enterococcus faecalis: its role in root canal treatment failure and current concepts in retreatment, „Journal of Endodontics”, 32 (2), 2006, s. 93–98, DOI:10.1016/j.joen.2005.10.049, PMID:16427453 [dostęp 2023-02-06](ang.).