Mónge-Nájera, Julián, and Karla Vega Corrales. 2012. “The Relationship Between Homicides Reported by Printed Media and Official Records in Costa Rica, and a Test of the Duntley-Buss Biological Model of Murde”. UNED Research Journal 4 (1):93-99. https://doi.org/10.22458/urj.v4i1.137.