DeVore, Jerry R., and Richard A. Sherman. “Problems With the Continued Proliferation of Unsubstantiated Psychophysiological Techniques Being Promulgated and Sold for Clinical Use”. Annals of Psychophysiology, vol. 7, Oct. 2020, pp. 03-05, doi:10.29052/2412-3188.v7.i1.2020.3-5.