1. Reinking, R. H., & Hutchings, D. Follow up and extension of “Tension headaches—What method is most effective?” Paper presented at the meeting of the Biofeedback Research Society, Colorado Springs, Colorado, 1976.
2. Hart, J. D., & Cichanski, K. A. Biofeedback as a treatment for headache: Conceptual and methodological issues. Paper presented at the meeting of the Association for the Advancement of Behavior Therapy, San Francisco, 1975.
3. Application of electromyographic biofeedback to the relaxation training of schizophrenic, neurotic, and tension headache patients;Acosta;Journal of Consulting and Clinical Psychology,1978
4. An experimental test of assumptions relating to the use of electromyographic biofeedback as a general relaxation training technique;Alexander;Psychophysiology,1975
5. Clinical applications of EMG biofeedback;Alexander,1979