"A Critique of Ideal Worlds:  Hegel and Marx on Modern Utopian Thought," in G. Saccaro del Buffa and Arthur O. Lewis, eds., Utopie per Gli Anni Ottanta:  Studi Interdisciplinari sui temi, la storia, i progetti (Roma:  Gangemi, 1986), pp. 635-673.

"Hegel, Marx, and Dialectic Theory" [review essay], International History Review III, no. 2 (May 1986), pp. 288-93.

"Marx's Enterprise of Critique," in J. Roland Pennock, ed., Marxism (NOMOS Series; New York:  New York University Press, 1983), pp. 252-76.

"Scarcity, Sufficiency, and Abundance:  Hegel and Marx on Material Needs and Satisfaction," International Political Science Review 4, no. 3 (Summer 1983), pp. 295-310.

"Property, Freedom, and Individuality in Hegel's and Marx's Political Thought," in J. Roland Pennock, ed., Property (NOMOS Series; New York:  New York University Press, 1980), pp. 130-67.

I have also posted an article, "Marx and the Myth of Economic Determinism," at http://www.marxists.org