| Issue Date | Title | Author(s) | Type | Access |
| Sep-2011 | Costly investment, complementarities and the skill premium | Afonso, Óscar; Thompson, Maria João Ribeiro | Article | Restricted access (UMinho) |
| 2010 | Costly investment, complementarities, international technological-knowledge diffusion and the skill premium | Afonso, Óscar; Neves, Pedro; Thompson, Maria João Ribeiro | Working paper | Open access |
| 4-Oct-2012 | A growth model for the quadruple helix | Afonso, Óscar; Monteiro, Sara; Thompson, Maria João Ribeiro | Article | Open access |
| 2010 | A growth model for the quadruple helix innovation theory | Afonso, Óscar; Monteiro, Sara; Thompson, Maria João Ribeiro | Working paper | Open access |
| 2014 | Innovation economy, productive public expenditure and economic growth | Afonso, Óscar; Monteiro, Sara; Thompson, Maria João Ribeiro | Article | Restricted access (UMinho) |
| 2012 | Innovation economy, productive public expenditures and economic growth | Afonso, Óscar; Monteiro, Sara; Thompson, Maria João Ribeiro | Working paper | Open access |
| 2014 | The skill premium and economic growth with costly investment, complementarities and international technological-knowledge diffusion | Afonso, Óscar; Neves, Pedro; Thompson, Maria João Ribeiro | Article | Restricted access (UMinho) |
