@article{teixeira_message_negri_salatino_2006,  title={Bauer-7-en-3beta-yl acetate: a major constituent of unusual samples of Brazilian propolis},  volume={29},  ISSN={0100-4042},  url={https://doi.org/10.1590/S0100-40422006000200013},  DOI={10.1590/S0100-40422006000200013},  number={2},  journal={Química Nova},  publisher={Sociedade Brasileira de Química},  author={Teixeira, Érica Weinstein and Message, Dejair and Negri, Giuseppina and Salatino, Antonio},  year={2006},  month={Mar},  pages={245–246} }