1. Beghetto V, Zancanaro A, Scrivanti A, Matteoli U, Pozza G (2013) The leather industry: a chemistry insight part I: an overview of the industrial process. Sci Ca’Foscari 1:13–22
2. George N, Chauhan PS, Kumar V, Puri N, Gupta N (2014) Approach to ecofriendly leather: characterization and application of an alkaline protease for chemical free dehairing of skins and hides at pilot scale. J Clean Prod 79:249–257
3. Kamini NR, Hemachander C, Mala JGS, Puvanakrishnan R (1999) Microbial enzyme technology as an alternative to conventional chemicals in leather industry. Curr Sci 77:80–86
4. Rydin S, Frendrup W (1993) Possibilities for a reduction of the pollution load from tanneries. Nordic Council of Ministers, Copenhagen
5. Black M, Canova M, Rydin S, Scalet BM, Roudier S, Sancho LD (2013) Best available techniques (BAT) reference document for the tanning of hides and skins. European Commission Database, p 46.
http://eippcb.jrc.ec.europa.eu/reference/BREF/TAN_Published_def.pdf