Lead is Poison Coalition, 23 Feb 2013 http://www.plosone.org/article/info%3Adoi%2F10.1371%2Fjournal.pone.0005330
Ejnar Brochmann, 29 Jan 2013 http://www.plosone.org/article/info%3Adoi%2F10.1371%2Fjournal.pone.0005330
Dob Fancier, 27 Jan 2013 Avhandlingen http://www.plosone.org/article/info%3Adoi%2F10.1371%2Fjournal.pone.0005330