1. Colak SELIME, Zengin GÖKHAN, Ozgunay H, Sarikahya H, Sari O, Yuceer L (2005) Utilization of leather industry prefleshings in biodiesel production. J Am Leather Chem Assoc 100(4):137–141
2. Aten A, Innis KF, Knew E (1955) Flaying and curing of hides and skins as a rural industry. Food and Agricultural Organization of the United Nations, Rome
3. Taylor MM, Cabez LF, Marmer WN, Brown EM, Kolomaznik K (1998) Functional properties of hydrolysis products from collagen. J Am Leather Chem Assoc (USA)
4. Gaidau C, Ghiga M, Filipescu L, Stepan E, Lacatus V, Popescu M (2007) Advanced materials obtained from leather–by products. In: CEEX conference proceedings Romania, pp 252–252
5. Ferreira MJ, Almeida MF (2011) Recycling of leather waste containing chromium-a review. Mater Sci Res J 5(4):327