Castillo, R., and G. Crespi. “The Impact of Intangible Capital on Productivity and Wages: Firm Level Evidence from Peru”. 2024. Estudios De Economía, vol. 51, no. 1, Aug. 2024, pp. pp. 45-84, https://estudiosdeeconomia.uchile.cl/index.php/EDE/article/view/75150.