@article{rego_sabbag_soares_peixoto_2018,  title={Technical efficiency analysis of marine shrimp farming (Litopenaeus vannamei) in biofloc and conventional systems: A case study in northeastern Brazil},  volume={90},  ISSN={0001-3765},  url={https://doi.org/10.1590/0001-3765201820170953},  DOI={10.1590/0001-3765201820170953},  number={4},  journal={Anais da Academia Brasileira de Ciências},  publisher={Academia Brasileira de Ciências},  author={REGO, MARCELO A.S. and SABBAG, OMAR J. and SOARES, ROBERTA B. and PEIXOTO, SILVIO},  year={2018},  month={Oct},  pages={3705–3716} }