Vasquez, A.; Jakobsson, T.; Ahrne, S.; Forsum, U.; Molin, G. (2002). "Vaginal Lactobacillus Flora of Healthy Swedish Women". Journal of Clinical Microbiology 40 (8): 2746–2749. doi:10.1128/JCM.40.8.2746-2749.2002. PMC 120688. PMID 12149323.
Onderdonk, A. B.; Zamarchi, G. R.; Walsh, J. A.; Mellor, R. D.; Muñoz, A.; Kass, E. H. (1986). "Methods for quantitative and qualitative evaluation of vaginal microflora during menstruation". Applied and environmental microbiology 51 (2): 333–339. PMC 238869. PMID 3954346.