FITZGERALD, Keith; BEDOGNI, Jacopo. Examining the Volatility of Ireland’s Tax Base in the Paradigm of Modern Portfolio Theory. The Economic and Social Review, [S. l.], v. 50, n. 3, Autumn, p. 429–458, 2019. Disponível em: https://esr.ie/index.php/esr/article/view/1249. Acesso em: 19 feb. 2026.