1. Bernat JL, Culver CM, Gen B. On the definition and criterion of death. Ann Intern Med 1981;94(3):389394.
2. Shewmon DA. “Brain-stem death”, “brain death” and death: a critical re-evaluation of the purported evidence. Issues Law Med 1998;14(2):125–145.
3. Seifert J. What is Life? The Originality, Irreducibility, and Value of Life. Amsterdam: Rodopi, 1997.
4. Schrödinger E. What is Life? The Physical Aspect of the Living Cell. New York: The Macmillan Company, 1946.
5. Korein J. The problem of brain death: development and history. Ann N YAcad Sci 1978; 315: 19–38.