25
Fred Hoyle, Chandra Wickramasinghe, Evolution from Space, стр. 130.
26
Fabbri Britannica Bilim Ansiklopedisi, том 2, изд. 22, стр.
27
Richard В. Bliss & Gary Е. Parker, Origin of Life, California; 1979, стр. 14.
28
Stanley Miller, Molecular Evolution of Life: Current Status of the Prebiotic Synthesis of Small Molecules, 1986, стр. 7.
29
Kevin Mc Kean, Bilim ve Teknik, изд. 189, стр. 7.
30
J. P. Ferris, С. T. Chen, "Photochemistry of Methane, Nitrogen, and Water Mixture As a Model for the Atmosphere of the Primitive Earth", Journal of American Chemical Society, том 97: 11, 1975, стр. 2964.