Čupr, P., Sáňka, M., Holoubek, I.: Study to assess risks to the environment and health resulting from the use of phosphate fertilisers containing cadmium, November 2005; RECETOX Research Centre for Environmental Chemistry and Ecotoxicology, Masaryk University; TOCOEN REPORT No 285. http://europa.eu.int/comm/enterprise/chemicals/legislation/fertilizers/cadmium/sctee.pdf
Čupr, P., Sáňka, M., Holoubek, I.: Study to assess risks to the environment and health resulting from the use of phosphate fertilisers containing cadmium (évaluation des risques pour l’environnement et la santé liés à l’utilisation d’engrais phosphatés contenant du cadmium), novembre 2005; RECETOX Research Centre for Environmental Chemistry and Ecotoxicology, Masaryk University; TOCOEN REPORT no 285. http://europa.eu.int/comm/enterprise/chemicals/legislation/fertilizers/cadmium/sctee.pdf