Chesnov V., Postnikov A., Shirokov R., Shirokova V., Snytko V. Historical expedition on «The natural and artificial water ways of the Russian North, 17th-19th c.; The Northern Dvina route and its role in the changing ecological situation in the region» // Voprosy istorii estestvoznaniia i tekhniki. – 2008. – V. 29. – Issue 1 C. 192-204 . URL: Постников А. В., Снытко В. А., Чеснов В. М., Широкова В. А., Широков Р. С. Историко-научная экспедиция "естественные и искусственные водные пути севера России XVII-XIX вв.: Северо-Двинский водный путь и его роль в изменении экологической обстановки в реги

Chesnov, Vasilii, Postnikov, Aleksey, Shirokov, R. S, Shirokova, Vera, Snytko, Valerian "Historical expedition on «The natural and artificial water ways of the Russian North, 17th-19th c.; The Northern Dvina route and its role in the changing ecological situation in the region»." Voprosy istorii estestvoznaniia i tekhniki. 29.1 (2008).:192-204.

Chesnov V., Postnikov A., Shirokov R., Shirokova V., Snytko V. (2008). Historical expedition on «The natural and artificial water ways of the Russian North, 17th-19th c.; The Northern Dvina route and its role in the changing ecological situation in the region». Voprosy istorii estestvoznaniia i tekhniki. vol. 29, no. 1, pp.192-204