References
- Sorokhtin , O. G. and Ushakov , S. A. 2002 . Evolution of Earth , 560 Moscow : Lzd. Moscow Government University .
- Sorokhtin , O. G. , Chilingar , G. V. and Khilyuk , L. 2007 . Evolution of Climate on Earth: Global Warming and Global Cooling , 450 Amsterdam : Elsevier .