共 43 条
- [21] JOHNSON HG, 1970, U NATIONAL BUREAU C, V22, P9
- [22] JOHNSON HG, 1976, BERNHARD HARMS VORLE, V7
- [23] Katrak H., 1973, OXFORD ECON PAP, V25, P337
- [25] KELLY R, 1976, ER17 US DEP COMM BUR
- [26] KELLY R, 1977, ER24 US DEP COMM BUR
- [28] R-D EXPENDITURES, INNOVATION AND INTERNATIONAL-TRADE [J]. REVUE ECONOMIQUE, 1976, 27 (06): : 1008 - 1029
- [29] COMMODITY COMPOSITION OF INTERNATIONAL TRADE IN MANUFACTURES - EMPIRICAL ANALYSIS [J]. OXFORD ECONOMIC PAPERS-NEW SERIES, 1974, 26 (03): : 350 - 374
- [30] Linnemann H., 1966, ECONOMETRIC STUDY IN