European Chemicals Bureau, Institute of Health and Consumer Protection, Joint Research Centre, European Commission. (EUR 22693 EN). http://publications.jrc.ec.europa.eu/repository/bitstream/1/5259/1/EUR%2022693.pdf
European Chemicals Bureau, Institute of Health and Consumer Protection, Joint Research Centre, European Commission. (EUR 22693 EN). http://publications.jrc.ec.europa.eu/repository/bitstream/1/5259/1/EUR%2022693.pdf