González-Gómez, Manuel, and Mª Soledad Otero Giráldez. “The Causality Between Economic Growth and Immigration in Germany and Switzerland”. The Economic and Social Review 42, no. 3, Autumn (September 26, 2026): 271–287. Accessed October 2, 2026. https://esr.ie/index.php/esr/article/view/3511.