1. Bliwise NG. Factors related to sleep quality in healthy elderly women. Psychol Aging 1992; 7 : 83-8.
2. Hays JC, Blazer DG, Foley DJ. Risk of napping: excessive daytime sleepiness and mortality in an older community population. J Am Geriatr Soc 1996; 44 : 693-8.
3. Hoch C, Buysse DJ, Monk TH, Reynolds CF. Sleep disorders and aging. In: Birren JE, Sloane RB, Cohen GD, editors. Handbook of mental health and aging, 2nd ed. New York: Academic Press; 1992 p. 557-8.
4. Engle-Friedman M, Bootzin RR. Insomnia as a problem for the elderly. In: Wisocki PA, editor. Handbook of clinical behavioral therapy with the elderly client. New York: Plenum Press; 1991 p. 273-98.
5. Nielson HG, Nordhus IH, Kvale G. Insomnia in older adults. In: Nordhus IH, Vandenbos GH, Berg S, Fromholt P, editors. Clinical geropsychology. Washington DC: American Psychological Association; 1998 p. 167-76.
6. Morin CM. Insomnia: Psychological assessment and management. New York: Guildford Press; 1993.
7. Taimini IK. The Science of Yoga. Madras: The Theosophical Publishing House; 1986.
8. Sharma RK, Dash B. Charaka Samhita. Varanasi: Chowkhamba Sanskrit Series Office; 1998.
9. Dev S. Ancient–modern concordance in Ayurvedic plants: some examples. Environ Health Perspect 1999; 107 : 783-9.
10. Kayed K. [Insomnia and hypnotica]. Tidsskr Nor Laegeforen 1995; 115 : 1087-90.
11. Sharangadhara. Madhyama Khanda. In: Shastri P, editor.
Sharangadhara Samhita, Adhamalla Teeka. Varanasi: Oriental Publishers & Distributors; 1985.
12. Swami Gambhirananda. Taittiriya Upanishad. Calcutta: Advaita Ashrama; 1986.
13. Vempati RP, Telles S. Yoga based guided relaxation reduces sympathetic activity judged from baseline levels. Psychol Rep 2002; 90 : 487-94.
14. Telles S, Reddy SK, Nagendra HR. Oxygen consumption and respiration following two yoga relaxation techniques.Appl Psychophysiol Biofeedback 2000; 25 : 221-7.
15. Zar JH, editor. Biostatistical analysis. New Jersey: Prentice-Hall, Inc.; 1999.
16. Neubauer DN. Sleep problems in the elderly. Am Fam Physician 1999; 59 : 2551-60.
17. Bliwise DL. Sleep in normal aging and dementia. Sleep1993; 16 : 40-81.
18. Neubauer DN, Smith PL, Earley CJ. Sleep disorders. In: Barker LR, Burton JR, Zieve PD, editors. Principles of ambulatory medicine. 5th ed. Baltimore: Williams & Wilkins; 1999 p. 1314-28.
19. Roberts RE, Shema SJ, Kaplan GA, Strawbridge WJ. Sleep complaints and depression in an aging cohort: A prospective perspective. Am J Psychiatry 2000; 157 : 81-8.
20. Long L, Huntley A, Ernst E. Which complementary and alternative therapies benefit which conditions? A survey of the opinions of 223 professional organizations.Complement Ther Med 2001; 9 : 178-85.
21. Udupa KN, Singh RH, Yadav RA. Certain studies on psychological and biochemical responses to the practice of Hatha Yoga in young normal volunteers. Indian J Med Res 1973; 61 : 237-44.
22. Telles S, Narendran S, Raghuraj P, Nagarathna R, Nagendra HR. Comparison of changes in autonomic and respiratory parameters of girls after yoga and games at a community home. Percept Mot Skills 1997; 84 : 251-7.
23. Telles S, Srinivas RB. Autonomic and respiratory measures in children with impaired vision following yoga and physical activity programs. Int J Rehabil Health 1999; 4 : 117-22.
24. Raju PS, Madhavi S, Prasad KVV, Reddy MV, Reddy ME, Sahay BK, et al. Comparison of effects of yoga & physical exercise in athletes. Indian J Med Res 1994; 100 : 81-6.
25. Rao S. Oxygen consumption during yoga-type breathing at altitudes of 520m and 3,800m. Indian J Med Res 1968;56 : 701-5.
26. Panjwani U, Selvamurthy W, Singh SH, Gupta HL, Thakur L, Rai UC. Effect of Sahaja yoga practice on
seizure control & EEG changes in patients of epilepsy.Indian J Med Res 1996; 103 : 165-72.
27. Okuji Y, Matsuura M, Kawasaki S, Kometani S, Shimoyama T, Sato M, et al. Prevalence of insomnia in various psychiatric diagnostic categories. Psychiatry Clin Neurosci 2002; 56 : 239-40.
28. Bhattacharya SK, Bhattacharya A, Sairam K, Ghosal S. Anxiolytic-antidepressant activity of Withania somnifera glycowithanolides: an experimental study. Phytomedicine 2000; 7 : 463-9.
29. Zanocchi M, Ponzetto M, Spada S, Risso R, Aimer T, Maero B, et al. Sleep disorders in the aged. Minerva Med 1999; 90 : 421-7.
30. Nagarathna R, Nagendra HR. Yoga practices for anxiety and depression. Bangalore: Swami Vivekananda Yoga Prakashana; 2001.
31. Nagendra HR. The science of emotion culture (Bhakti Yoga). Bangalore: Swami Vivekananda Yoga Prakashana; 2000.
32. Swami Sivananda. Narada bhakti sutras. Shivanandanagar, Uttar Pradesh: The Divine Life Society; 1997.
33. Nagendra HR. Yoga - Its basis and applications. Bangalore: Swami Vivekananda Yoga Prakashana; 2000.
34. Vitiello MV. Effective treatment of sleep disturbances in older adults. Clin Cornerstone 2000; 2 : 16-27.