@article{article94b49f09,
title   = {Utilization of floral resources by species of Melipona (Apidae, Meliponinae): floral preferences},
author = {Ramalho, M and Kleinert, Astrid de Matos Peixoto and Imperatriz-Fonseca, Vera Lucia},
year = {1989},
doi = {10.1051/apido:19890301},
journal   = {Apidologie}
}