Shane A. Liddelow, Sally Temple, Kjeld Møllgård, Renate Gehwolf, Andrea Wagner, Hannelore Bauer, Hans-Christian Bauer, Timothy N. Phoenix, Katarzyna M. Dziegielewska, Norman R. Saunders
PLoS One. 2012; 7(3): e33554. Published online 2012 Mar 21. doi: 10.1371/journal.pone.0033554