Oskar Lange's 1938 article "The Rate of Interest and the Optimum Propensity to Consume", is usually associated with the original IS-LM approach of the late 1930s. However, Lange's article was not only an attempt to illuminate Keynes's main innovations but the first part of a wide project that...

This paper compares Marx's economics with those by Sraffa, Keynes, Kalecki and Minsky. The paper takes an "ex post" view on the matter and rather looks at the output side of the respective authors, but not at the input side. This means no attempt is made at studying in a systematic way, if and...

The principle of effective demand, and the claim of its validity for a monetary production economy in the short and in the long run, is the core of heterodox macroeconomics, as currently found in all the different strands of post-Keynesian economics (Fundamentalists, Kaleckians, Sraffians,...