Cabral Renovato Silva, T.L. and Spellmann Cavalcanti de Farias, S.A. 2016. The additional act of 1834 and the autonomy of the provinces: a historical and legal analysis about the 1824 constitutional reform under the influence of liberal constitutionalism of the nineteenth century. Revista Jurídica Portucalense . 18 (Feb. 2016), 102–124.