共 6 条
[3]
Patent Statistics as Economic Indicators: A Survey[J] . Zvi Griliches.Journal of Economic Literature . 1990 (4)
[4]
Age and scientific productivity. Differences between fields of learning[J] . Svein Kyvik.Higher Education . 1990 (1)
[6]
Bibliographies of Eminent Scientists[J] . Wayne Dennis.The Scientific Monthly . 1954 (3)