Published research studies on insomnia:

Abrams AI, Siegel LM. The Transcendental Meditation program and rehabilitation at Folsom State Prison: a cross-validation study. Criminal Justice and Behavior, 1978, 5(1):3-20.

Alexander CN, Swanson GC, Rainforth MV, Carlisle TW, Todd CC, Oates RM. Effects of the Transcendental Meditation program on stress reduction, health, and employee development: a prospective study in two occupational settings. Anxiety, Stress, and Coping, 1993, 6:245-262.

Brooks JS, Scarano T. Transcendental Meditation in the treatment of post-Vietnam adjustment. Journal of Counseling and Development, 1985, 64:212-215.

Elder C, Nidich S, et al, Effect of Transcendental Meditation on Employee Burnout: A randomized controlled study. The Permanente Journal, 2014, Winter; 18(1):19-23.

Haratani T., et al. Effects of Transcendental Meditation (TM) on the health behavior of industrial workers. Japanese Journal of Public Health 37 (10 Suppl.): 729, 1990.

Ljunggren G. The influence of Transcendental Meditation on neuroticism, use of drugs and insomnia. Lakartidningen, 1977, 74(47):4212-4214.

Lovell-Smith H. D. Transcendental Meditation—treating the patient as well as the disease. The New Zealand Family Physician, 9: 62-65, April 1982.

Nidich S, O’Connor T, Rutledge T, Duncan J, Compton B, Seng A, Nidich R. Reduced trauma symptoms and perceived stress in male prison inmates through the Transcendental Meditation Program: a randomized controlled trial. The Permanente Journal, 2016, 20(4):16-007.

Orme-Johnson DW & Dillbeck MC. Methodological Concerns for Meta-Analyses of Meditation: Comment on Sedlmeier et al. Psychological Bulletin, 2014, 140(2):610-16.

Orme-Johnson D. W., et al. Meditation in the treatment of chronic pain and insomnia. In National Institutes of Health Technology Assessment Conference on Integration of Behavioral and Relaxation Approaches into the Treatment of Chronic Pain and Insomnia, Bethesda Maryland: National Institutes of Health, 1995.

Orme-Johnson DW The use of meditation in corrections. International Journal of Offender Therapy and Comparative Criminology, 2011, 55(4):662-664, doi:10.1177/0306624X10371803.