| article html file updated | 6 February 2020 05:39 CET | Update | https://www.mdpi.com/2073-4468/2/4/587 |
| article html file updated | 7 May 2019 21:55 CEST | Update | - |
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| article xml file uploaded | 27 November 2014 04:17 CET | Original file | https://www.mdpi.com/2073-4468/2/4/587/xml |
| article pdf uploaded. | 20 November 2013 09:45 CET | Version of Record | https://www.mdpi.com/2073-4468/2/4/587/pdf |
