1. The graphic rating scale;Freyd;J. educ. Psychol.,1923
2. Pain Sensations and Reactions;Hardy,1952
3. Measurement of pain;Huskisson;Lancet,1974
4. Pain: Mechanisms and measurement;Huskisson,1974
5. A new look at ibuprofen;Huskisson;Rheum. Phys. Med.,1970