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The approximate distribution function of the Stein-rule estimator
Ullah, Aman - In: Economics letters 10 (1982) 3/4, pp. 305-308
Persistent link: https://www.econbiz.de/10002937152
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The exact, large-sample and small-disturbance conditions of dominance of biased estimators in linear models
Ullah, Aman - In: Economics letters 6 (1980) 4, pp. 339-344
Persistent link: https://www.econbiz.de/10002938641
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Estimation and testing in a regression model with spherically symmetric errors : Received 5.6.1984
Ullah, Aman; Zinde-Walsh, Victoria - In: Economics letters 17 (1985) 1/2, pp. 127-132
Persistent link: https://www.econbiz.de/10002938730
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A note on the skewness and kurtosis coefficients of Zellner's sure estimator
Ullah, Aman; Rafiquzzaman, M. - In: Indian economic review : biannual journal of the Delhi … 12 (1977) 2, pp. 181-184
Persistent link: https://www.econbiz.de/10002938767
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Generalized two stage least squares estimators for a structural equation with both fixed and random coefficients
Raj, Baldev; Srivastava, V. K.; Ullah, Aman - In: International economic review 21 (1980) 1, pp. 171-183
Persistent link: https://www.econbiz.de/10002725169
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On Lindley-like mean correction in the improved estimation of linear regression models
Srivastava, V. K.; Ullah, A. - In: Economics letters 6 (1980) 1, pp. 29-35
Persistent link: https://www.econbiz.de/10002865849
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A family of improved shrinkage factors for the ordinary ridge estimator
Ullah, A.; Vinod, H. D.; Kadiyala, R. K. - In: Proceedings of the Econometric Society European meeting …, (pp. 259-277). 1981
Persistent link: https://www.econbiz.de/10002938700
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A family of improved shrinkage factors for the ordinary ridge estimator
Ullah, A.; Vinod, H. D.; Kadiyala, R. K. - In: The economic studies quarterly : the journal of the … 32 (1981) 2, pp. 164-175
Persistent link: https://www.econbiz.de/10002938706
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Properties of shrinkage estimators in linear regression when disturbances are not normal
Ullah, A. - In: Journal of econometrics 21 (1983) 3, pp. 389-402
Persistent link: https://www.econbiz.de/10002938814