http://habrahabr.ru/post/197898/

https://boomstarter.ru/projects/65396/planetarnyy_peredatchik_energii_-_po_vsey_zemle_bez_provodov)

http://www.amnh.org/learn-teach/young-naturalist-awards/winning-essays2/2011-winning-essays/the-secret-of-the-fibonacci-sequence-in-trees)

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