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Are there nonlinear relationships between the profitability of Portuguese service SME and its specific determinants?
Nunes, Paulo Maçãs, (2010)
Sources of finance for R&D investment : empirical evidence from Portuguese SMEs using dynamic estimators
Serrasqueiro, Zélia, (2011)
Assessing the nonlinear nature of the effects of R&D intensity on growth of SMEs : a dynamic panel data approach
Nunes, Paulo Maçãs, (2013)