DiamondS.: The value of biofeedback in the treatment of chronic headache: A 4-years retrospective studyHeadache1984; 24: 5–18.
2.
BlanchardEBAndrasikFGuarnieriPNeffD.2, 3, 4 year follow-up on the self-regulatory treatment of chronic headache Journal of Cons. and Clin. Psychol.1987; 55, n.2: 257–259.
3.
GrazziLFredianiFZappacostaBBoiardiABussoneG.Psychological Assessment in Tension Headache Before and After Biofeedback Treatment. Headache1988; 28: 337–338.
4.
BlanchardEBAndrasikF.Management of chronic headache. Pergamon Press. New York, 1985.
5.
AndrasikFBlanchardEBNeffD.Biofeedback and Relaxation Training for Chronic Headache: A Controlled Comparison of Booster Treatments and Regular Contacts for Long - Term MaintenanceJournal of Cons. and Clin. Psychol.1984; 52, n. 4: 609–615.