1. Wastewater Treatment Technology;Patterson,1977
2. Integrated Risk Information System (IRIS) on Cadmium;US Environmental Protection Agency (USEPA),1999
3. Cadmium in the Environment;Friberg,1974
4. Environmental Protection (Prescribed Processes and Substances) Regulations (SI 1991/472);UK red list substances (UK),1991
5. Biosorbents for Metal Ions;Wase,1997