The Sraffian schools

After briefly recalling Sraffa's own contribution, the article surveys the ensuing debate, concerning both the critique of the marignalist theory, the revival of the classical approach, and the analytical contributions on specific aspects of Sraffa's 1960 book. Three lines of research for a modern reconstruction of th classical approach are then illustrated: Pasinetti's lsquo;Ricardianrsquo; reconstruction, Garegnani's lsquo;Marxianrsquo; reconstruction, and Sylos Labini's lsquo;Smithianrsquo; reconstruction. Finally, an assessment of these three research lines is provided, together with some suggestion for their integration.