Funding

This project was sponsored by Fundação para a Ciência e Tecnologia (National Agency for Sciences and Tecnology) - project reference PTDC/ELT/71763/2006; FCOMP-01-0124-FEDER-007263.

Additionally, the project was supported by the Portuguese Ministry of National Defense until May 2011, within the protocol between both institutions issued on the 2nd of April of 2009.