Duncan Kennedy (Harvard Law School) has posted Contrast and Comparison of Critical Legal Studies and Neo-Marxism As Theories of Law and Economy (Excerpt) (Duncan Kennedy, A Critique of Adjudication [fin de siècle], Harvard University Press (1997) p. 280-96, 407-09; ISBN 9780674177598) on SSRN. Here is the abstract:
This excerpt from "A Critique of Adjudication [fin de siècle]" (1997) describes, compares and contrasts the Critical Legal Studies approach to the question of the relationship of law and economy (including the "base/superstructure" debate) with Neo-Marxist theories popular at the time.
Read the excerpt! Then buy the book!