| article html file updated | 6 February 2020 13:51 CET | Update | https://www.mdpi.com/2079-7737/3/4/831 |
| article html file updated | 7 May 2019 05:07 CEST | Update | - |
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| article html file updated | 31 December 2014 10:30 CET | Original file | - |
| article xml file uploaded | 31 December 2014 10:30 CET | Original file | https://www.mdpi.com/2079-7737/3/4/831/xml |
| article pdf uploaded. | 21 November 2014 14:35 CET | Version of Record | https://www.mdpi.com/2079-7737/3/4/831/pdf |
