@article{barbosa_dantas_moreira_galvão_araújo_2015,  title={Use of an Automatic System in the Preparation of Gas Mixtures for Multivariate Calibration: A Case Study Involving NIR Analysis of Natural Gas},  volume={26},  ISSN={0103-5053},  url={https://doi.org/10.5935/0103-5053.20150183},  DOI={10.5935/0103-5053.20150183},  number={10},  journal={Journal of the Brazilian Chemical Society},  publisher={Sociedade Brasileira de Química},  author={Barbosa, Barbosa and Dantas, Hebertty V. and Moreira, Pablo N. T. and Galvão, Roberto K. H. and Araújo, Mário C. U.},  year={2015},  month={Oct},  pages={2029–2034} }