1. “The Classical Dichotomy in Ricardian Economics”;Akhtar;History of Political Economy,1975
2. “Ricardo on Factor Prices and Income Distribution in a Growing Economy”;Barkai;Economica,1959
3. “Ricardo's Second Thoughts on Rent as a Relative Share”;Barkai;Southern Economic Journal,1966
4. Ricardian Economics;Blaug,1958
5. Economic Theory in Retrospect;Blaug,1978