citation
Simmons, Robert W.; Noble, Andrew D.; Pongsakul, P.; Sukreeyapongse, O.; Chinabut, N. 2009. Cadmium-hazard mapping using a general linear regression model (Irr-Cad) for rapid risk assessment. Environmental Geochemistry and Health, 31(1):71-79. doi: http://dx.doi.org/10.1007/s10653-008-9157-x