1. Aakvaag, T., et al., 1996. Utfordringen - forskning og innovasjon for ny vekst, Report from a commission appointed by the Norwegian Ministry of Industry and Energy.
2. Abadie, A., Angrist, J., Imbens, G., 1998. Instrumental variable estimation of quantile treatment effects. NBER Technical working papers 229.
3. Beyond Becker: Training in imperfect labor markets;Acemoglu;Economic Journal,1999
4. Bounding the effects of R&D: an investigation using matched establishment-firm data;Adams;RAND Journal of Economics,1996
5. Almeida, P., Kogut, B., 1996. The economic sociology of the geographic localization of ideas and the mobility of patent holders. Mimeo (Georgetown University and University of Pennsylvania).