Gavina A, Matos JM, Vasconcelos PB. Computation of Optimal Control Solutions with the Tau Method and an Error Estimator . In: Computational Science and Its Applications (ICCSA), 2014 14th International Conference on . Portugal, Guimarães: IEEE; 2014. 1. p. 111-115p. Edit

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