@article{hendges_montanari_malvessi_silveira_2011,  title={Production and characterization of endo-polygalacturonase from Aspergillus niger in solid-state fermentation in double-surface bioreactor},  volume={54},  ISSN={1516-8913},  url={https://doi.org/10.1590/S1516-89132011000200005},  DOI={10.1590/S1516-89132011000200005},  number={2},  journal={Brazilian Archives of Biology and Technology},  publisher={Instituto de Tecnologia do Paraná - Tecpar},  author={Hendges, Diogo Henrique and Montanari, Queli and Malvessi, Eloane and Silveira, Mauricio Moura da},  year={2011},  month={Mar},  pages={253–258} }