@article{articleb473a284,
title   = {Working-class royalty: bees beat the case system},
author = {Wenseleers, Tom and Ratnieks, Francis L. W and Ribeiro, Marcia de Fátima and Alves, Denise Araújo and Imperatriz-Fonseca, Vera Lucia},
year = {2005},
doi = {10.1098/rsbl.2004.0281},
journal   = {Biology Letters}
}