3O. vin Gierke, " Natural Law and the Theory of Society", see G. C. Christie, Jurisprudence - Text and Readings on the Philosophy of Law, West Publishing Company, 1973, p. 263.
4R. Dworkin, Taking Rights Seriously, Harvard University Press, 1978, p. 272.
5See Robert P. George, Natural Law - Contemporary Essays, Oxford, Clarendon Press, 1992, p. 31.
6See John Finis, Natural Law and Natural Rights ,Oxford University Press, 1980. p. 125-127.
7See Tony Bums, Natural Law and Political Ideology in the Philosophy of Hegel ,Avebury Ashgate Publishing Ltd, 1996.
8See Yves R. Simon, The Tradition of Natural Law, New York, Fordham University Press, 1965, p. 3.
9J. Waldron, Theories of Rights ,Oxford University Press, 1984, p.21.
10See H. Kelsen, Essays in Legal and Moral Philosophy, ed. by Weinberger.