@article{carvalho_lopes_vidal_santos_2021,  title={Simultaneous spectrophotometric determination and classical least squares method: a simple experiment to introduce the concept of multivariate calibration},  volume={44},  ISSN={0100-4042},  url={https://doi.org/10.21577/0100-4042.20170686},  DOI={10.21577/0100-4042.20170686},  number={5},  journal={Química Nova},  publisher={Sociedade Brasileira de Química},  author={Carvalho, Jhonatas R. and Lopes, Larissa R. and Vidal, Luciano N. and Santos, Poliana M.},  year={2021},  pages={655–658} }