Bernhard JD (2005). „Itch and pruritus: what are they, and how should itches be classified?”. Dermatol Ther18 (4): 288–91. DOI:10.1111/j.1529-8019.2005.00040.x. PMID16296999., Pristupljeno 24. 11. 2009.(en)
Bernhard JD (2005). „Itch and pruritus: what are they, and how should itches be classified?”. Dermatol Ther18 (4): 288–91. DOI:10.1111/j.1529-8019.2005.00040.x. PMID16296999., Pristupljeno 24. 11. 2009.(en)