Tsoulfidis, Lefteris (2010): Από την Οικονομική Άνθηση στην Κρίση του 1930. Unpublished.
Iliadi, Fotoula; Mariolis, Theodore; Soklis, George and Tsoulfidis, Lefteris (2012): Bienenfeld’s approximation of production prices and eigenvalue distribution: some more evidence from five European economies. Unpublished.
Mavroudeas, Stavros and Tsoulfidis, Lefteris (1999): Comments on Ben Fine's paper 'Privatisation: Theory with Lessons from the UK'. Published in: Contemporary Economic Theory (1999)
Tsoulfidis, Lefteris (2005): Falling Rate of Profit and Overaccumulation in Marx and Keynes. Published in: Political Economy Quarterly , Vol. 43, No. 3 (2006): pp. 65-75.
Tsoulfidis, Lefteris (2005): Notes on Ricardo’s theory of value and taxation. Published in: Asian African Journal of Economic and Econometrics , Vol. 5, No. 1 (June 2005): pp. 35-47.
Mariolis, Theodore; Rodousakis, Nikolaos and Tsoulfidis, Lefteris (2006): The rate of profit in the Greek economy 1988-1997. an input-output analysis. Published in: Archives of Economic History , Vol. 18, No. 2 (December 2006): pp. 177-190.
