Molinari, Benedetto, and José L. Torres. “Technological Sources of Economic Growth in Europe and the U.S.”. Technological and Economic Development of Economy 24, no. 3 (May 28, 2018): 1178-1199. Accessed November 9, 2024. https://jbem.vilniustech.lt/index.php/TEDE/article/view/1687.