1. Wiberg Leanne (1982). The Hico Structure: a possible impact structure in north-central Texas, USA. Lunar and Planet. Sci. 13: Abstr. Pap. 13th Lunar and Planet. Sci. Conf., Houston, Tex., March 15-19, Pt 2., Houston, Tex., P. 863-864
  2. Jarmo Moilanen (2009). Impact Structures of the World.
  3. D. Rajmon (2012).

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