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- [41] An increase in R&D expenditures for 1997 predicted by Battelle R&D Magazine JOURNAL OF COATINGS TECHNOLOGY, 1997, 69 (865): : 24 - &
- [42] The more you spend, the more you get? The effects of R&D and capital expenditures on the patenting activities of biotechnology firms Scientometrics, 2013, 94 : 497 - 521