Rus, A. I. D., M. V. Achim, and S. N. Borlea. “Theoretical and Methodological Approaches on the Intellectual Capital”. Studia Universitatis Vasile Goldiș Arad, Seria Științe Economice, Vol. 29, no. 2, June 2019, pp. 1-16, https://publicatii.uvvg.ro/index.php/studiaeconomia/article/view/529.