Stanford Encyclopedia of Philosophy – "Property and Ownership" http://plato.stanford.edu/entries/property/
Jeremy Waldron is a New Zealand professor of law and philosophy. He holds a University Professorship at the New York University School of Law and was formerly the Chichele Professor of Social and Political Theory at All Souls College, Oxford University. Waldron also holds an adjunct professorship at Victoria University of Wellington. Waldron is regarded as one of the world's leading legal and political philosophers.
Wikipedia
Stanford Encyclopedia of Philosophy – "Property and Ownership" http://plato.stanford.edu/entries/property/