TY - JOUR T1 - Use of an Automatic System in the Preparation of Gas Mixtures for Multivariate Calibration: A Case Study Involving NIR Analysis of Natural Gas JO - Journal of the Brazilian Chemical Society A1 - Barbosa, Barbosa A1 - Dantas, Hebertty V. A1 - Moreira, Pablo N. T. A1 - Galvão, Roberto K. H. A1 - Araújo, Mário C. U. SN - 0103-5053 UL - 10.5935/0103-5053.20150183 VL - 26 Y1 - 2015 PB - Brasil ER -