@article{stecka_pohl_2011,  title={Pre-concentration of lithium prior to its determination in honey by flame optical emission spectrometry},  volume={22},  ISSN={0103-5053},  url={https://doi.org/10.1590/S0103-50532011000400010},  DOI={10.1590/S0103-50532011000400010},  number={4},  journal={Journal of the Brazilian Chemical Society},  publisher={Sociedade Brasileira de Química},  author={Stecka, Helena and Pohl, Pawel},  year={2011},  pages={677–683} }