1. Allison, P. D. (2009). Fixed Effects Models for Events History Data. In Paul D. Allison (Eds.), Fixed Effects Regression Models (pp. 70–87). Thousand Oaks, CA: SAGE Publications, Inc.
2. Bartel, A. P., & Sicherman, N. (1998). Technological Change and the Skill Acquisition of Young Workers. Journal of Labor Economics, 16(4), 718–755.
3. Becker, G. S. (1964). Human Capital. New York: Columbia University Press.
4. Becker, G. S. (1985). Human Capital, Effort, and the Sexual Division of Labor. Journal of Labor Economics, 3(1), 33–58.
5. Berger, M. C., Earle, J. S., & Sabirianova, K. Z. (2001). Worker Training in a Restructuring Economy: Evidence from the Russian Transition (IZA Discussion Paper 361).