卡尔达肖夫指数 (Chinese Wikipedia)

Analysis of information sources in references of the Wikipedia article "卡尔达肖夫指数" in Chinese language version.

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3web.archive.org

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1books.google.com

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books.google.com

Sagan, Carl. Jerome Agel , 编. Cosmic Connection: An Extraterrestrial Perspective. Freeman J. Dyson, David Morrison. Cambridge Press. October 2000 [1973] [2008-01-01]. ISBN 0-521-78303-8.

coseti.org

Lemarchand, Guillermo A. Detectability of Extraterrestrial Technological Activities. Coseti. [2013-01-29]. （原始内容存档于2019-03-18）. .

eia.gov

Primary Energy Consumption 2008-2012' Total Primary Energy Consumption 2008-2012 请检查|url=值 (帮助) (cfm). Statistical Review of World Energy 2008-2012. [2015-07-22]. （原始内容存档于2013-06-14）.

mkaku.org

Kaku, Michio. The Physics of Interstellar Travel: To one day, reach the stars.. 2010 [2010-08-29]. （原始内容存档于2014-02-10）.

web.archive.org

Lemarchand, Guillermo A. Detectability of Extraterrestrial Technological Activities. Coseti. [2013-01-29]. （原始内容存档于2019-03-18）. .
Kaku, Michio. The Physics of Interstellar Travel: To one day, reach the stars.. 2010 [2010-08-29]. （原始内容存档于2014-02-10）.
Primary Energy Consumption 2008-2012' Total Primary Energy Consumption 2008-2012 请检查|url=值 (帮助) (cfm). Statistical Review of World Energy 2008-2012. [2015-07-22]. （原始内容存档于2013-06-14）.