A general overview of atomic spectrometric techniques / Alfredo Sanz-Medel, Rosario Pereiro and José Manuel Costa-Fernández -- Implementing a robust methodology : experimental design and optimization / Xavier Tomás Morer, Lucinio González-Sabaté, Laura Fernández-Ruano and María Paz Gómez-Carracedo -- Ordinary multiple linear regression and principal components regression / Joan Ferré-Baldrich and Ricard Boqué-Martí -- Partial least-squares regression / Jose Manuel Andrade-Garda, Ricard Boqué-Martí, Joan Ferré-Baldrich and Alatzne Carlosena-Zubieta -- Multivariate regression using artificial neural networks / Jose Manuel Andrade-Garda, Alatzne Carlosena-Zubieta, María Paz Gómez-Carracedo and Marcos Gestal-Pose.