Global meliponiculture: challenges and opportunities - Cortapassi-Laurino, Marilda; Imperatriz-Fonseca, Vera Lucia; Roubik, David W; Dollin, Anne; Heard, Tim; Aguilar, Ingrid; Venturieri, Giorgio Cristino; Eardley, Connal; Nogueira-Neto, Paulo (Apidologie, 2006)