1. The structure of collagen;Haines,1991
2. Effect of artificial heat aging on the humidity sorption of parchment and leathers compared with archaeological samples;Abdel-Maksoud;J. Soc. Leather Technol. Chem.,2000
3. The chemical degradation of Leather;Larsen;Chimia,2008
4. Evaluation of the amino acid composition, structure and properties of archaeological leather;Plavana;Procedia Chem,2013
5. Investigation techniques and conservation methods for a historical parchment document;Abdel-Maksoud;J. Soc. Leather Technol. Chem.,2011