Pieter J. A. de Koning, J. Alain Kummer, Stefanie A. H. de Poot, Razi Quadir, Roel Broekhuizen, Anne F. McGettrick, Wayne J. Higgins, Bart Devreese, D. Margaret Worrall, Niels Bovenschen
PLoS One. 2011; 6(8): e22645. Published online 2011 Aug 3. doi: 10.1371/journal.pone.0022645