1. Department of Statistics, Universidade Federal da Bahia, Salvador 40110-909, Brazil
2. Department of Statistics, CASTLab, Universidade Federal de Pernambuco, Recife 50670-901, Brazil
3. School of Industrial Engineering, Pontificia Universidad Católica de Valparaíso, Valparaíso 2362807, Chile
4. Centre of Mathematics, Universidade do Minho, 4710-057 Braga, Portugal