Media type: E-Article Title: Productive experience and specialization opportunities for Portugal: an empirical assessment Contributor: Lebre de Freitas, Miguel; Nunes, Luis Catela; Neves, Rui Costa; Salvado, Susana imprint: Springer Science and Business Media LLC, 2015 Published in: Portuguese Economic Journal Language: English DOI: 10.1007/s10258-015-0108-z ISSN: 1617-982X; 1617-9838 Keywords: General Economics, Econometrics and Finance ; Economics and Econometrics Origination: Footnote: