@article{morais_silva_pinheiro_menezes_lima_2017,  title={A Low-Cost Video-Based Reflectometer for Selective Detection of Cu<sup>2+</sup> Using Paper-Based Colorimetric Sensors},  volume={28},  ISSN={0103-5053},  url={https://doi.org/10.21577/0103-5053.20170087},  DOI={10.21577/0103-5053.20170087},  number={12},  journal={Journal of the Brazilian Chemical Society},  publisher={Sociedade Brasileira de Química},  author={Morais, Camilo L. M. and Silva, Lilian C. da and Pinheiro, Nayara A. and Menezes, Fabrício G. and Lima, Kássio M. G.},  year={2017},  month={Dec},  pages={2506–2513} }