Hartman, R.
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1

A Monte Carlo analysis of alternative estimators in models ..:

, In: Journal of business & economic statistics
Hartman, Raymond S.. (1991)  1 - p. 41-49
Copies: Zentrale;
 
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2

Self-selection bias in the evaluation of voluntary energy c..:

, In: The review of economics and statistics / publ. for Harvard University
Hartman, Raymond S.. (1988)  3 - p. 448-458
Copies: Zentrale;
 
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