Santos, M. D., R. J. Gagliardi, A. P. M. G. Mac-Kay, P. S. Boggio, R. Lianza, and F. Fregni. “Transcranial Direct-Current Stimulation Induced in Stroke Patients With Aphasia: A Prospective Experimental Cohort Study”. São Paulo Medical Journal, vol. 131, no. 6, Nov. 2013, pp. 422-6, https://periodicosapm.emnuvens.com.br/spmj/article/view/1386.