Formulo de Drake (Esperanto Wikipedia)

Analysis of information sources in references of the Wikipedia article "Formulo de Drake" in Esperanto language version.

refsWebsite

Global rank Esperanto rank

low place

7,614^th place

198^th place

158^th place

9^th place

21^st place

1web.archive.org

1^st place

1^st place

5,100^th place

2,086^th place

astrobio.net

The Drake Equation Revisited: Part I.

pbs.org

PBS NOVA: Origins - The Drake Equation. Pbs.org. Alirita 2010-03-07.

planetary.org

Arkivita kopio. Arkivita el la originalo je 2006-02-22. Alirita 2006-02-22.

web.archive.org

Arkivita kopio. Arkivita el la originalo je 2006-02-22. Alirita 2006-02-22.

youtube.com

http://www.youtube.com/watch?v=MlikCebQSlY Carl Sagan - Cosmos - Drake Equation