| article html file updated | 6 February 2020 06:32 CET | Update | https://www.mdpi.com/2072-6643/6/1/207 |
| article html file updated | 20 September 2019 04:55 CEST | Update | - |
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| article html file updated | 19 August 2015 16:25 CEST | Update | - |
| article html file updated | 17 February 2014 12:30 CET | Original file | - |
| article xml file uploaded | 17 February 2014 12:29 CET | Original file | https://www.mdpi.com/2072-6643/6/1/207/xml |
| article pdf uploaded. | 2 January 2014 16:53 CET | Version of Record | https://www.mdpi.com/2072-6643/6/1/207/pdf |
