1. 1. Karu, T. (1988). Molecular mechanism of the therapeutic effect of low-intensity laser radiation. Lasers in Life Science 2, 53-74.
2. 2. Smith, K. C. (ed.) (1989). The Science of Photoiology, 2nd edn. Plenum Press, NY.
3. 3. Walker, J. B., Akhanjee, L. K., Cooney, M. M., Goldstein, J., Tamayoshi, S. and Segal-Gidan, F. (1988). Laser therapy for pain of trigeminal neuralgia. Clinical Journal of Pain 3, 183-187.
4. 4. Moore, K. C., Hira, N., Kumar, P. S., Jayakumar, C. S. and Ohshiro, T. (1988). A double blind crossover trial of low level laser therapy in the treatment of postherpetic neuralgia. Laser Therapy 1, 7-9.
5. Relief from chronic pain by low power laser irradiation