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- [2] SOME PROBLEMS AND SOLUTIONS IN SELECTION OF AN R+D PORTFOLIO [J]. ELECTRONISCHE DATENVERARBEITUNG, 1969, 11 (12): : 597 - +
- [3] ANALYTICAL EFFECTIVENESS OF MATHEMATICAL MODELS FOR R+D PROJECT SELECTION [J]. MANAGEMENT SCIENCE SERIES B-APPLICATION, 1973, 19 (08): : 907 - 923