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thefreedictionary.com
„fur”. Приступљено 4. 3. 2017 — преко The Free Dictionary.
Liu, J.; Kim, D.; Brown, L.; Madsen, T.; Bouchard, G. F. „Comparison of Human, Porcine and Rodent Wound Healing With New Miniature Swine Study Data”(PDF). sinclairresearch.com. Sinclair Research Centre, Auxvasse, MO, USA; Veterinary Medical Diagnostic Laboratory, Columbia, MO, USA. Архивирано из оригинала(PDF) 27. 01. 2018. г. Приступљено 27. 1. 2018. „Pig skin is anatomically, physiologically, biochemically and immunologically similar to human skin”