Münstedt, Karsten; El-Safadi, Samer; Brück, Friedel; Zygmunt, Marek; Hackethal, Andreas; Tinneberg, Hans-Rudolf (). „Can iridology detect susceptibility to cancer? A prospective case-controlled study”. Journal of Alternative and Complementary Medicine (New York, N.Y.). 11 (3): 515–519. doi:10.1089/acm.2005.11.515. ISSN1075-5535. PMID15992238.
Münstedt, Karsten; El-Safadi, Samer; Brück, Friedel; Zygmunt, Marek; Hackethal, Andreas; Tinneberg, Hans-Rudolf (). „Can iridology detect susceptibility to cancer? A prospective case-controlled study”. Journal of Alternative and Complementary Medicine (New York, N.Y.). 11 (3): 515–519. doi:10.1089/acm.2005.11.515. ISSN1075-5535. PMID15992238.
Norn, Mogens (). „[Analysis of iris: history and future]”. Dansk Medicinhistorisk Arbog: 103–117. ISSN0084-9588. PMID14765528.
Worrall, R. S. (). „Pseudoscience--a critical look at iridology”. Journal of the American Optometric Association. 55 (10): 735–739. ISSN0003-0244. PMID6491119.
Münstedt, Karsten; El-Safadi, Samer; Brück, Friedel; Zygmunt, Marek; Hackethal, Andreas; Tinneberg, Hans-Rudolf (). „Can iridology detect susceptibility to cancer? A prospective case-controlled study”. Journal of Alternative and Complementary Medicine (New York, N.Y.). 11 (3): 515–519. doi:10.1089/acm.2005.11.515. ISSN1075-5535. PMID15992238.
Norn, Mogens (). „[Analysis of iris: history and future]”. Dansk Medicinhistorisk Arbog: 103–117. ISSN0084-9588. PMID14765528.
Worrall, R. S. (). „Pseudoscience--a critical look at iridology”. Journal of the American Optometric Association. 55 (10): 735–739. ISSN0003-0244. PMID6491119.