1. Instances of soil and crop heavy metal contamination in China;Wang;J. Soil Contam.,2001
2. Trace Elements in Soils and Plants;Kabata-Pendias,2001
3. Anthropogenic additions of cadmium to soils;Alloway,1999
4. Trace Elements in Soils and Plants;Kabata-Pendias,2001
5. The transfer of cadmium from agricultural soils to the human food chain;Jackson,1992