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Hartog, J. and Bierens, H. (1988). Non-linear regression with discrete explanatory variables, with an application to the earnings function. Journal of Econometrics, 38(3):269-299.

  • Journal
    Journal of Econometrics

In this paper, it is shown that regression models with discrete explanatory variables take the form of a polynominal of a linear function of the regressors. A two-stage estimation procedure and various model specification tests are developed in close harmony with an empirical application to the earnings function.