مقالة · مجلة · 2008
Matthew Cairns, Ilona Carneiro, Paul Milligan, Seth Owusu‐Agyei, Timothy Awine, Roly Gosling و2 آخرون
PLoS ONE
اقرأه10.1371/journal.pone.0002227
كما طُبع: Seth Owusu-Agyei