Nunes, Ana Bela: A reforma fiscal de 1922 (The 1922 fiscal reform), in: Valério, Nuno (ed.): Os impostos no Parlamento Português. Sistemas fiscais e doutrinas fiscais nos séculos XIX e XX (Taxes in the Portuguese parliament. Fiscal systems and doctrines in the 19th and 20th centuries), Lisbon 2006 Dom Quixote, pp. 99-123.