“Hayek on Justice and the Order of Actions,” in Cambridge Companion to Hayek, ed. E. Feser (Cambridge: Cambridge University Press, 2006) 259-286.
“Non-Absolute Rights and Libertarian Taxation,” Social Philosophy and Policy, v.23 no.2, (Summer 2006), 109-141.
“Prerogatives, Restrictions, and Rights,” Social Philosophy and Policy, v. 22 no.1 (Winter 2005), 357-393.
"Libertarianism and Classical Liberalism: The Liberty Tradition" (with Gerald Gaus), A Handbook of Political Theory, ed. G. Gaus and C. Kukathus (London: Routledge, 2004) pp. 115-130.
"The State of Nature Has a Law of Nature to Govern It," in Individual Rights Reconsidered, T.R.Machan, ed. (Stanford, CA: Hoover Institution, 2001) pp.87-112.
"Equality, Benevolence, and Responsiveness to Agent-Relative Value," Social Philosophy and Policy, vol.16 no.1 (Winter 2002) pp.314-341.
"Self-Ownership, Marxism, and Egalitarianism: Part I. Challenges to Historical Entitlement," Politics, Philosophy, and Economics, vol.1 no.1 (February 2002) pp.119-146.
"Self-Ownership, Marxism, and Egalitarianism: Part II. Challenges to the Self-Ownership Thesis," Politics, Philosophy, and Economics, vol.1 no.2 (June 2002) pp.237-276.
"Self-Ownership, Taxation, and Democracy: A Philosophical-Constitutional Perspective," in Politics, Taxation, and the Rule of Law D. Racheter, ed. (Dordrecht: Kluwer Academic Publishers, 2002) pp.9-32.
"Problematic Arguments in Randian Ethics," Journal of Ayn Rand Studies, vol.5 no. 1 (Fall 2003) pp.1-66.
"In Defense of the Jurisdiction Theory of Rights," The Journal of Ethics, vol. 4 (2000), pp. 71-98.
"In Defense of Individualism," Ethical Theory and Moral Practice 2 (1999), 87-115.
"The Alienability of Lockean Natural Rights" in Persons and Their Bodies, ed. M.J. Cherry ( Kluwer, 1999), 143-176.
"Deontic Restrictions Are Not Agent-Relative Restrictions," in Social Philosophy and Policy (1998), 60-83.
"Right-Wing Liberalism, Left-Wing Liberalism, and the Self-Ownership Proviso" in Liberal Institutions, Economic Constitutional rights, and the Role of Organizations, ed. Karl-Heinz Ladeur (Nomos Verlagsgesellschaft, 1997), 9-29.