@article{santos_rodrigues_2021,  title={Periphytic algae biomass at different shading levels: an experimental approach},  volume={33},  ISSN={2179-975X},  url={https://doi.org/10.1590/S2179-975X7520},  DOI={10.1590/S2179-975X7520},  journal={Acta Limnologica Brasiliensia},  publisher={Associação Brasileira de Limnologia},  author={Santos, Helivania Sardinha dos and Rodrigues, Liliana},  year={2021},  pages={e9} }