1. Sola AE, Bonica JJ. Chapter 21: Myofascial Pain Syndromes. In: The Management of Pain. Ed. Bonica JJ. Philadelphia, London 1990:352-368.
2. Kraus H, Fischer AA (1991) Diagnosis and treatment of myofascial pain. Mt Sinai J Med 58(3):235–239
3. Lou L, Racz GB (1998) Tutorial 38: examination of trigger points that produce myofascial pain syndrome. Pain Digest 8:364–375
4. Norregaard J, Jacobsen S, Kristensen JH (1998) A narrative review on classification of pain conditions of the upper extremities. Scand J Rehab Med 31:153–164
5. Raj PP (1998) Diagnosis and management of fibromyalgia and myofascial pain syndrome. Pain Digest 8:357–363