A GPU-based implementation of the firefly algorithm for variable selection in multivariate calibration problems - Paula, Lauro Cássio Martins de; Soares, Anderson da Silva; Lima, Telma Woerle de; Delbem, Alexandre Cláudio Botazzo; Coelho, Clarimar José; Galvão Filho, Arlindo Rodrigues (PLOS One, 2014)