1. Physical chemistry of leather making;Bienkiwicz,1983
2. Some theoretical aspects of the degreasing of wet pelts;Pankhurst;J Int Soc Leather Trades' Chem,1946
3. Progress in leather science;Dempsey,1948
4. The uses of ultrasound in chemistry;Mason,1990
5. Ultrasound – its chemical, physical and biological effects;Suslick,1988