Niederhofer, Helmut. “Additional Biological Therapies for Attention-Deficit Hyperactivity Disorder: Repetitive Transcranical Magnetic Stimulation of 1 Hz Helps to Reduce Methylphenidate”. Clinics and Practice 2, no. 1 (December 30, 2011): e8. Accessed September 30, 2020. https://www.clinicsandpractice.org/index.php/cp/article/view/cp.2012.e8.