Soares, Marcos Antônio Striquer. “Characteristics of the Presidential Government System in Brazil and the Democratic Fragility: Control Difficulties of the President of the Republic in Brazil”. Semina: Ciências Sociais E Humanas, vol. 24, no. 1, June 2003, pp. 1-24, doi:10.5433/1679-0383.2003v24n1p1.