@article{hoffmann_costa_wolff_platzer_costa_2007,  title={The potential of denitrification for the stabilization of activated sludge processes affected by low alkalinity problems},  volume={50},  ISSN={1516-8913},  url={https://doi.org/10.1590/S1516-89132007000200018},  DOI={10.1590/S1516-89132007000200018},  number={2},  journal={Brazilian Archives of Biology and Technology},  publisher={Instituto de Tecnologia do Paraná - Tecpar},  author={Hoffmann, Heike and Costa, Tatiana Barbosa da and Wolff, Delmira Beatriz and Platzer, Christoph and Costa, Rejane Helena Ribeiro da},  year={2007},  month={Mar},  pages={329–337} }