@article{malvessi_silveira_2004,  title={Influence of medium composition and pH on the production of polygalacturonases by Aspergillus oryzae},  volume={47},  ISSN={1516-8913},  url={https://doi.org/10.1590/S1516-89132004000500004},  DOI={10.1590/S1516-89132004000500004},  number={5},  journal={Brazilian Archives of Biology and Technology},  publisher={Instituto de Tecnologia do Paraná - Tecpar},  author={Malvessi, Eloane and Silveira, Mauricio Moura da},  year={2004},  month={Sep},  pages={693–702} }