1. Nisca D.H., Elming S.-'A., Thunehed H. (1996). The Lycksele ring structure in northern Sweden: The result of an impact?. GFF, Vol.118, P. 100
  2. Nisca D.H., Thunehed H., Pesonen L.J., Elming S.-A. (1997). The lycksele structure, a huge ring formation in northern Sweden: result of an impact?. LPI Contrib., No.922, P. 36
  3. Thunehed H., Elming S.-A., Pesonen L.J. (1999). Lycksele structure in northern Sweden: Result of an impact? . Spec. Pap., No.339, P. 125-130
  4. Jarmo Moilanen (2003). List of probable and possible impact structures of the World.
  5. D. Rajmon (2009).


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