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2. Evolution of the Protoplanetary Cloud and Formation of the Earth and the Planets;Safronov,1969
3. Statistical behavior of planetesimals in the primitive solar system;Nakagawa;Prog. Theor. Phys.,1978
4. Long-term behavior of planetesimals and the formation of the planets;Hayashi;Publ. Astron. Soc. Jpn.,1977
5. Composition and Petrology of the Earth's Mantle;Ringwood,1975