@conference {OA792, title = {Pilhas de Combust{\'\i}vel como Fonte Limpa de Energia El{\'e}ctrica}, booktitle = {X Portuguese-Spanish Congress in Electrical Engineering}, year = {2007}, note = {n/a}, abstract = {n/a}, url = {http://oa.uninova.pt/792/}, author = {Amadeu Rodrigues and M{\'a}rio Neves and Jo{\~a}o Pina} }