1. Merriam-Webster Online Dictionary and Thesaurus, http://www.merriam-webster.com .
2. Austad, S.N., Why we Age: What Science is Discovering About the Body’s Journey Through Life, New York: Wiley, 1999.
3. Skulachev, V.P., IUBMB Life, 2005, vol. 57, pp. 305–310.
4. Skulachev, V.P., Exp. Gerontol., 2001, vol. 36, pp. 995–1024.
5. de Grey, A.D.N.J., The Mitochondrial Free Radical Theory of Aging (Molecular Biology Intelligence Unit 9), Austin, Tex: Landes Bioscience, 1999.