1. Clean technologies, targets already achieved and trends for the coming years;Maja;J Soc Leather Technol Chem,1998
2. La pollution due a I'azote, Centre technique ducair, Tannerie et environment;Carre,1983
3. Modern tanning chemistry;Convington;Chem Soc Rev,1997
4. The preservation of hides and skins;Bailey;J Am Leather Chem Assoc,2003
5. Methods for the treatment and preservation of raw hides and skins. A review;Elliott;J Soc Leather Technol Chem,1983