@article{robertson_1981,  title={Associação congenérica de Ceriodaphnia cornuta Sars 1886 e Ceriodaphnia reticulata (Jurine) 1820 (Crustacea, Cladocera) na Represa de Curuá-Una, Pará, Brasil },  volume={11},  ISSN={0044-5967},  url={https://doi.org/10.1590/1809-43921981114717},  DOI={10.1590/1809-43921981114717},  number={4},  journal={Acta Amazonica},  publisher={Instituto Nacional de Pesquisas da Amazônia},  author={Robertson, Barbara A},  year={1981},  month={Dec},  pages={717–722} }