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1. − (www.rzd-expo.ru).
2. − (http://www.gofrostal.ru)..
3. Green Bridges, A literature review, published by Natural England. 27 July 2015. − (www.gov.uk/natural-england).
4. Ecological Engineering: Bridging Between Ecology and Civil Engineering [] / Hein van Bohemen. .
5. - . − (http://www.ecolife.ru).
378:371.4