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Panel data with errors-in-variables : essential and redundant orthogonality conditions in GMM-estimation
Biørn, Erik - In: Economics letters 59 (1998) 3, pp. 275-282
Persistent link: https://www.econbiz.de/10001242935
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Hedonic price indexes for personal computers : intertemporal and interspatial comparisons
Griliches, Zvi (contributor) - In: Economics letters 44 (1994) 4, pp. 353-357
Persistent link: https://www.econbiz.de/10001164020
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Market value, R & D, and patents
Griliches, Zvi - In: Economics letters 7 (1981) 2, pp. 183-187
Persistent link: https://www.econbiz.de/10002530466
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Patents and R & D at the firm level : a first report
Pakes, Ariel; Griliches, Zvi - In: Economics letters 5 (1980) 4, pp. 377-381
Persistent link: https://www.econbiz.de/10002620164