“The Necessary Strengthening of Public Pension System Revenues As a Guarantee of Its Sustainability: Challenges and Difficulties in a Digitalized Economy”. Revista de Derecho de la Seguridad Social, Laborum (March 2, 2026): 61–83. Accessed November 6, 2026. https://revista.laborum.es/index.php/revsegsoc/article/view/1254.