'The Development of A Dual Economy' was published in The Economic Journal, Jun., 1961

    By mathematical analysis, this paper probes a new way different from Lewis-Harris-Fei Model demonstrating a comprehensive logic, which makes up for deficiencies of L-H-F Model in terms of mathematics. So far, no one has been developing any models as superior as Jorgenson's analysis.
    This is a good reference for those who are interested in development economics and excellent in mathematical understandings. I hope it is somewhat contributive to your learning the theories of Dual Economy.