1. Antal, A., Alekseichuk, I., Bikson, M., Brockmöller, J., Brunoni, A. R., Chen, R., et al. (2017). Low intensity transcranial electric stimulation: safety, ethical, legal regulatory and application guidelines. Clinical Neurophysiology, 128(9), 1774–1809.
2. Batuman, E. (2015). Adventures in transcranial direct-current stimulation. Retrieved October 3, 2017, from http://www.newyorker.com/magazine/2015/04/06/electrified
3. Boshara, R., Emmons, W. R., & Noeth, B. J. (2015). The Demographics of wealth: how age, education and race separate thrivers from strugglers in today's economy. Essay No. 2: The Role of Education. Center for Household Financial Stability, Federal Reserve Bank of St. Louis.
4. Braun, V., & Clarke, V. (2006). Using thematic analysis in psychology. Qualitative Research in Psychology, 3(2), 77–101. https://doi.org/10.1191/1478088706qp063oa .
5. Brem, A.-K., Fried, P. J., Horvath, J. C., Robertson, E. M., & Pascual-Leone, A. (2014). Is neuroenhancement by noninvasive brain stimulation a net zero-sum proposition? NeuroImage, 85(Pt 3), 1058–1068. https://doi.org/10.1016/j.neuroimage.2013.07.038 .