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[2]Archived 19 November 2016 at the Wayback Machine The Carpathian Project: Carpathian Mountains in Serbia, Institute for Spatial Planning, Faculty of Geography, University of Belgrade (2008), Retrieved: 15 November 2016
[3]Archived 1 August 2019 at the Wayback Machine Bulletin of the Natural History Museum, pg. 54, Valuing the geological heritage of Serbia (UDC: 502.171:55(497.11), Aleksandra Maran (2010), Retrieved 15 November 2016
[1]Archived 12 October 2017 at the Wayback Machine "The Carpathians" European Travel Commission, in The Official Travel Portal of Europe, Retrieved 15 November 2016
web.archive.org
[1]Archived 12 October 2017 at the Wayback Machine "The Carpathians" European Travel Commission, in The Official Travel Portal of Europe, Retrieved 15 November 2016
[2]Archived 19 November 2016 at the Wayback Machine The Carpathian Project: Carpathian Mountains in Serbia, Institute for Spatial Planning, Faculty of Geography, University of Belgrade (2008), Retrieved: 15 November 2016
[3]Archived 1 August 2019 at the Wayback Machine Bulletin of the Natural History Museum, pg. 54, Valuing the geological heritage of Serbia (UDC: 502.171:55(497.11), Aleksandra Maran (2010), Retrieved 15 November 2016