Literatur

• Hallenbeck S., Nuth JA & Nelson RN (2000) Evolving optical properties of annealing silicate grains: From amorphous condensate to cristalline minerals, Astrophys. J. 535, 247-255.
• Nuth JA, Hill HGM & Kletetschka G (2000) Determining the ages of comets from the fraction of crystaline dust. Nature 406, 275-276.