| article html file updated | 6 February 2020 07:27 CET | Update | https://www.mdpi.com/1424-8247/7/2/207 |
| article html file updated | 7 May 2019 18:15 CEST | Update | - |
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| article html file updated | 19 August 2015 21:28 CEST | Update | - |
| article html file updated | 18 March 2014 09:57 CET | Original file | - |
| article xml file uploaded | 18 March 2014 09:57 CET | Original file | https://www.mdpi.com/1424-8247/7/2/207/xml |
| article pdf uploaded. | 24 February 2014 08:38 CET | Version of Record | https://www.mdpi.com/1424-8247/7/2/207/pdf |
