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R&D expenditure and sales : a nonparametric analysis
Nahm, Joon-woo - In: Journal of economic theory and econometrics : journal … 2 (1996) 1, pp. 103-124
Persistent link: https://www.econbiz.de/10001561928
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Nonparametric poolability test : test for difference between means in regressions
Nahm, Joon-woo - In: Journal of economic theory and econometrics : journal … 4 (1998) 2, pp. 153-180
Persistent link: https://www.econbiz.de/10001562245