A critique from a "heterodox" point of view.

Article in the Concise Encyclopedia of Economics by E. Roy Weintraub.

Article from the open source Wikipedia.

An article on the "Marshallians" from the History of Economic Thought site with bibliography and web links.

A profile of the Walrasians who developed the general equilibrium theory.

A dissertation proposal that offers a critical approach to the origins of Neoclassical economics.

An article on the History of Economic Thought site on this branch of mathematical economists centered around Karl Menger.