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WikiPedia: Thuyết_dynamo http://setiathome.berkeley.edu/~pauld/etc/210BPape... http://farside.ph.utexas.edu/teaching/plasma/lectu... http://www.usgs.gov/faq/?q=categories/9782/2738 http://www.phy6.org/earthmag/dynamos.htm http://www.phy6.org/earthmag/dynamos2.htm http://www.scholarpedia.org/article/Hydromagnetic_... http://dgmv.gov.vn/index.php/gioi-thieu-don-vi/lie... http://igp-vast.vn/index.php/vi https://books.google.com/books?id=qLuVCJtRTV0C&pg=... https://web.archive.org/web/20070221094040/http://...