@article{barth_2004,  title={Melissopalynology in Brazil: a review of pollen analysis of honeys, propolis and pollen loads of bees},  volume={61},  ISSN={0103-9016},  url={https://doi.org/10.1590/S0103-90162004000300018},  DOI={10.1590/S0103-90162004000300018},  number={3},  journal={Scientia Agricola},  publisher={Escola Superior de Agricultura "Luiz de Queiroz"},  author={Barth, Ortrud Monika},  year={2004},  month={May},  pages={342–350} }