1. Aravindhan R, Saravanabhavan S, Thanikaivelan P, Rao JR, Chandrasekaran B, Nair BU (2004) A biodriven lime and pickle free tanning paves way for greener garment leather production. J Am Leather Chem Assoc 99:53
2. Clesceri LS, Greenberg AE, Trussell RR (1989) Standard methods for the estimation of water and wastewater, 17th edn. American Public Health Association, Washington
3. Germann HP (1999) The ecology of leather production—present state and development trends. In: Proceedings of the XXV IULTCS congress. Tata McGraw-Hill, New Delhi
4. IUP 2 (International Commission of Physical Testing) (2000) Sampling. J Soc Leather Technol Chem 84:303
5. IUP 36 (International Commission of Physical Testing) (2000) Measurement of leather softness. J Soc Leather Technol Chem 84:377