António M.H. Pereira
(1), Miguel R. Silva
(2), Mercedes A.G. Domingues
(3), José C. Sá
(4)
(1)
ESTG/CDRsp, Polytechnic Institute of Leiria, Leiria, Portugal, Portugal,
(2)
ESTG/CDRsp, Polytechnic Institute of Leiria, Leiria, Portugal, Portugal,
(3)
ESTG/CDRsp, Polytechnic Institute of Leiria, Leiria, Portugal, Portugal,
(4)
ISEP/IPP, Polytechnic Institute of Porto, Porto, Portugal, Portugal
