1. Grieve R.A.F. (1997). Target Earth: Evidence for Large-scale // Geology, Environmental Science. - Annals of the New York Academy of Sciences. - p. 319-352. - DOI:10.1111/j.1749-6632.1997.tb48350.x
  2. Rampino M.R., Haggerty B.M., Pagano T.C. (1997). A Unified Theory of Impact Crises and Mass Extinctions: Quantitative Tests. Annals of the NYAS 822:403.
Urengonite tektites.

Спутниковая фотография кратера из Google Earth.

На главную