• Is more always better? On the relevance of decreasing returns to scale on innovation 

      Barbero, Javier; Zabala-Iturriagagoitia, Jon Mikel; Zofío, Jose Luis (Journal article; Peer reviewed, 2021)
      We contribute to the literature on the assessment of innovation systems by relating the amount of inputs available to the system and its performance through the concept of returns to scale (increasing, constant or decreasing). ...
    • The productivity of national innovation systems in Europe: Catching up or falling behind? 

      Zabala-Iturriagagoitia, Jon Mikel; Aparicio, Juan; Ortiz, Lidia; Caryannis, Elias A.; Grigoroudis, Evangelos (Peer reviewed; Journal article, 2021)
      Innovation is one of the main determinants of economic development in modern societies. The extant evidence points to increasing territorial disparities in Europe concerning innovation. Relying on production theory, we ...