1. Introdução de abelhas africanas no Brasil;WE Kerr;Arasil Apicola,1957
2. The history of the introduction of African bees to Brazil;WE Kerr;The S. Africa Bee Journal,1967
3. A history of the introduction of honey bee races into the United Sates: Part II;WS Sheppard;Amer Bee J,1989
4. A history of the introduction of honey bee races into the United Sates: Part I;WS Sheppard;Amer Bee J,1989
5. Evidence from mitochondrial DNA that African honey bees spread as continuous maternal lineages;HG Hall;Nature,1989