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American Academy of Ophthalmology Cornea/External Disease PPP Panel. Preferred Practice Pattern Guidelines. Dry Eye Syndrome PPP - 2013. Available at: AAO, Hoskins Center for Quality Eye Care, Приступљено 4. 11.2014.
Liew, M. S.; Zhang, M.; Kim, E.; Akpek, E. K. (2012). „Prevalence and predictors of Sjogren's syndrome in a prospective cohort of patients with aqueous-deficient dry eye”. Br J Ophthalmol. 96 (12): 1498—503. PMID23001257. S2CID34540988. doi:10.1136/bjophthalmol-2012-301767..
Liew, M. S.; Zhang, M.; Kim, E.; Akpek, E. K. (2012). „Prevalence and predictors of Sjogren's syndrome in a prospective cohort of patients with aqueous-deficient dry eye”. Br J Ophthalmol. 96 (12): 1498—503. PMID23001257. S2CID34540988. doi:10.1136/bjophthalmol-2012-301767..
Liew, M. S.; Zhang, M.; Kim, E.; Akpek, E. K. (2012). „Prevalence and predictors of Sjogren's syndrome in a prospective cohort of patients with aqueous-deficient dry eye”. Br J Ophthalmol. 96 (12): 1498—503. PMID23001257. S2CID34540988. doi:10.1136/bjophthalmol-2012-301767..