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Gavina A, Matos J., Vasconcelos PB. Improving the Accuracy of Chebyshev Tau Method for Nonlinear Differential Problems. Mathematics in Computer Science. 2016;10(2):279-289.Edit

Castro A, Matos J., Gavina A. Numerical solution of a PDE system with non-linear steady state conditions that translates the air stripping pollutants removal. Vol Nonlinear Science and Complexity Springer Netherlands 2011.Edit