There is little material in English, while much more is available in German, Italian, and Spanish. In English, I recommend "Autogenic Training. A Mind-Body App

There is little material in English, while much more is available in German, Italian, and Spanish. In English, I recommend "Autogenic Training. A Mind-Body Approach to the Treatment of Fibromyalgia and Chronic Pain Syndrome," by Micah R. Sadigh, Roberto Patarca Montero (Part II and Part III).