@article{quispe_nachtigall_fonseca_alberici_astudillo_villaseñor_eberlin_santos_2011,  title={Monitoring of β-blockers ozone degradation via electrospray ionization mass spectrometry},  volume={22},  ISSN={0103-5053},  url={https://doi.org/10.1590/S0103-50532011000500015},  DOI={10.1590/S0103-50532011000500015},  number={5},  journal={Journal of the Brazilian Chemical Society},  publisher={Sociedade Brasileira de Química},  author={Quispe, Cristina and Nachtigall, Fabiane M and Fonseca, Maria Francesca R and Alberici, Rosana M and Astudillo, Luis and Villaseñor, Jorge and Eberlin, Marcos N and Santos, Leonardo S},  year={2011},  month={May},  pages={919–928} }