1. LCA of Italian and Spanish bovine leather production systems in an industrial ecology perspective;Puig,2007
2. J. Ludvik, Chrome balance in leather processing, Regional programme for pollution control in the tanning industry in south-east Asia, United Nations Industrial Development Organization Report, 2000, pp. 1–18.
3. IULTCS, IUE-4 Assessment for chromium containing waste from the leather industry, in: International Union of Environment IUE, 2004, pp. 1–4.
4. Chemistry of chromium in soils with emphasis on tannery waste sites;Avudainayagam,2003
5. A bench study on chromium recovery from tannery sludge;Macchi;Wat. Res.,1991