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| article xml file uploaded | 28 April 2014 10:28 CEST | Original file | https://www.mdpi.com/2079-7737/3/1/22/xml |
| article pdf uploaded. | 20 December 2013 14:33 CET | Version of Record | https://www.mdpi.com/2079-7737/3/1/22/pdf |
