1. Clothier A., Schmél F. Footwear industry and its influence on the world trade. Vienna, United Nations Industrial Development Organization, 2004.
2. Future trends in the world leather and leather products industry and trade. Vienna, United Nations Industrial Development Organization, 2010.
3. Katsy G. D. Mammalian skin: theory and practice. Lugansk, Rus, 2000, 144 p. (in Russian)
4. A geopolitical essay of the leather industry over the past 50 years.;Koppany;Journal of the American Leather Chemists Association,2004
5. Pearson A. M., Dutson T. R. Inedible Meat by-Products. Advances in Meat Research, vol. 8, Springer Science & Business Media, 2013, 416 p.