http://www.qalibra.eu/showFile.cfm?filename=final_summary_report.pdf http://www.qalibra.eu/showFile.cfm?filename=final_summary_report.pdf http://www.promethee-gaia.net/software.html http://www.promethee-gaia.net/software.html http://www.efsa.europa.eu/en/efsajournal/pub/1673 http://www.efsa.europa.eu/en/efsajournal/pub/1673 http://www.fao.org/docrep/014/ba0136e/ba0136e00.pdf http://www.fao.org/docrep/014/ba0136e/ba0136e00.pdf http://www.fao.org/docrep/014/ba0136e/ba0136e00.pdf http://ucfoodsafety.ucdavis.edu/files/209893.pdf http://ucfoodsafety.ucdavis.edu/files/209893.pdf