He has presented papers on a wide range of topics, comprising Malthus's theory of unemployment, Sismondi's analysis of laissez-faire, Hobson's critique of the
marginal productivity theory of distribution, the history of the 'Wages Fund' controversy, early critics of economic rationalism, the history of writings on the distribution of wealth, the origins of the Lorenz Curve and the Gini Coefficient, Malthus's macroeconomic model, and the history and nature of the concept of positional goods, as well as offering short presentations on Keynesian income determination diagrams and Hobson's legacy 150 years after his birth.