1. Alexander KTW (1988) Enzymes in tannery ? Catalysts for progress?. J Am Leather Chem Assoc 83:289
2. Alexander KTW, Haines BM, Walker M P (1986) Influence of proteoglycan removal on opening?up in the beamhouse. J Am Leather Chem Assoc 81:85
3. Bailey DG, Tunick MH, Kuzma MA (1982) Effect of sulphide, chromium and phosphate ions on methane production by an anaerobic sludge acclamatised of tannery beamhouse effluent. Proceedings of the 14th Industrial Waste Mid Atlantic conference
4. Bienkiewicz K (1983) Physical chemistry of leather making. Malabar, FL: Robert E. Krieger Publishing
5. Buljan J (1996) Pollution limits for discharge of tannery effluent in water bodies and sewers. World Leather November:65