@article{articled656f7bc,
title   = {Age polyethism in Plebeia emerina (Friese) (Hymenoptera: Apidae) colonies related to propolis handling},
author = {Santos, Camila G dos and Blochtein, Betina and Megiolaro, Fernanda L and Imperatriz-Fonseca, Vera Lucia},
year = {2010},
doi = {10.1590/s1519-566x2010000500003},
journal   = {Neotropical Entomology}
}