Patents and R&D at the firm level: A first report
| Year of publication: |
1980
|
|---|---|
| Authors: | Pakes, Ariel ; Griliches, Zvi |
| Published in: |
Economics Letters. - Elsevier, ISSN 0165-1765. - Vol. 5.1980, 4, p. 377-381
|
| Publisher: |
Elsevier |