Johnson, MA; Armstrong, AW (2013). „Clinical and histologic diagnostic guidelines for psoriasis: a critical review.”. Clinical reviews in allergy & immunology44 (2): 166–72. DOI:10.1007/s12016-012-8305-3. PMID22278173.
Arbiser JL, Govindarajan B, Battle TE i dr.. (June 2006). „Carbazole is a naturally occurring inhibitor of angiogenesis and inflammation isolated from antipsoriatic coal tar”. J. Invest. Dermatol.126 (6): 1396–402. DOI:10.1038/sj.jid.5700276. PMID16614726.
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Johnson, MA; Armstrong, AW (2013). „Clinical and histologic diagnostic guidelines for psoriasis: a critical review.”. Clinical reviews in allergy & immunology44 (2): 166–72. DOI:10.1007/s12016-012-8305-3. PMID22278173.
Arbiser JL, Govindarajan B, Battle TE i dr.. (June 2006). „Carbazole is a naturally occurring inhibitor of angiogenesis and inflammation isolated from antipsoriatic coal tar”. J. Invest. Dermatol.126 (6): 1396–402. DOI:10.1038/sj.jid.5700276. PMID16614726.