| article html file updated | 6 February 2020 06:39 CET | Update | https://www.mdpi.com/2072-6651/6/1/283 |
| article html file updated | 7 May 2019 19:58 CEST | Update | - |
| article html file updated | 21 March 2019 10:48 CET | Update | - |
| article html file updated | 19 August 2015 16:53 CEST | Update | - |
| article html file updated | 14 August 2014 12:06 CEST | Update | - |
| article xml file uploaded | 14 August 2014 12:06 CEST | Update | https://www.mdpi.com/2072-6651/6/1/283/xml |
| article html file updated | 17 February 2014 12:41 CET | Original file | - |
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| article pdf uploaded. | 8 January 2014 15:33 CET | Version of Record | https://www.mdpi.com/2072-6651/6/1/283/pdf |