1. Boeyens, J.C.A. (2005): New Theories for Chemistry, Elsevier, Amsterdam.
2. Carr, B.J., J.R. Bond & W.D. Arnett (1984): Cosmological conse-quences of Population III stars, Astrophys. J., 1984 (277) 445-469.
3. Heger, A. & S.E. Woosley (2002): The nucleosynthetic signature of population III, Astrophys. J., 2002 (567) 532-543.
4. Glanz, J. (1996): Debating the Big Questions, Science, 1996 (273) 1168-1170.
5. Narlikar, J.V. (2002): An Introduction to Cosmology, 3rd ed., University Press, Cambridge.