1. Morrow J.R., Sandberg C.A., Ziegler W. (1999). Recognition of Mid-Frasnian (Early Late Devonian) oceanic impacts: Alamo, Nevada, USA, and Amonau, Hessen, Germany . Ber. Polarforsch (ESF-Impact Workshop "Oceanic Impacts: Mech. and Environ. Perturbat.", Bremerhaven), No.343, P. 66-69
  2. D. Rajmon (2009).


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