Fiscal Policy in the BRICs
Fredj Jawadi, Sushanta Mallick, Ricardo Sousa
Studies In Nonlinear Dynamics And Econometrics, vol. 18, 2014, p. 201-215.

Money Demand in the Euro Area, the US and the UK: Assessing the Role of Nonlinearity
Ricardo Sousa, Fredj Jawadi
Economic Modelling, vol. 32, 2013, p. 507-515.