@article{ferreira_castro_rocha_riboldi_d'azevedo_2007,  title={beta-lactamase production Haemophilus spp. and resistance to ampicillin in a general hospital in Porto Alegre city, RS, Brazil (2001-2005)},  volume={11},  ISSN={1413-8670},  url={https://doi.org/10.1590/S1413-86702007000100013},  DOI={10.1590/S1413-86702007000100013},  number={1},  journal={Brazilian Journal of Infectious Diseases},  publisher={Brazilian Society of Infectious Diseases},  author={Ferreira, Jorge A. S. and Castro, Andréa Cauduro de and Rocha, Marion P. and Riboldi, Gustavo and d'Azevedo, Pedro Alves},  year={2007},  month={Feb},  pages={50–52} }