1. Murray, T.H., Divided loyalties for physicians: Social context and moral problems, Soc. Sci. Med. 23 (8): 827–832, 1986.
2. Nozick, R., Anarchy, State and Utopia, Basic Books, New York 1974.
3. Engelhardt, H.T., The Foundations of Bioethics, Oxford University Press, New York, 1986
4. Rawls, J., A Theory of Justice, Harvard University Press, Cambridge, MA, 1971.
5. Loewy, E.H., Communities, obligations and health care, Soc. Sci. Med. 25 (7): 783–791, 1987.