1. Williams Trevor, Thouveny Nicolas, Creer K.M. (1998). A normalised intensity record from Lac du Bouchet: geomagnetic palaeointensity for the last 300 kyr? . Earth and Planet. Sci. Lett., Vol.156, No.1, P. 33-46
  2. Jarmo Moilanen (2003). List of probable and possible impact structures of the World.
  3. D. Rajmon (2009).


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