José Domingo Álvarez Hervás,
University of Almería, Spain
Nicolás Calvo Cruz,
University of Almería, Spain
Florbela Pires Fernandes,
Polytechnic Institute of Bragança, Portugal
Eligius M. T. Hendrix,
Universidad de Málaga, Spain
José Lima,
IPB, Portugal
Pilar Martinez Ortigosa,
University of Almería, Spain
Maria F. Pacheco,
Instituto Politécnico de Bragança, Portugal
Savins Puertas Martin,
University of Almería, Spain
Ana Maria Alves Coutinho Rocha,
Universidade do Minho, Portugal
Ana Paula Teixeira,
Universidade de Trás-os-Montes e Alto Douro, Portugal