Books detailing research and information:

"The Principles and Practice of Yoga in Health Care". Editors, Sat Bir Singh Khalsa, Lorenzo Cohen, Timothy McCall, Shirley Telles "Yoga As Medicine, The Yogic Prescription for Health and Healing". By Timothy McCall, M.D. "Yoga for Warriors, Basic Training in Strength, Resilience and Peace of Mind." By Beryl Bender Birch