| article html file updated | 6 February 2020 11:59 CET | Update | https://www.mdpi.com/2072-6643/6/9/3451 |
| article html file updated | 29 September 2019 08:00 CEST | Update | - |
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| article html file updated | 20 August 2015 17:21 CEST | Update | - |
| article html file updated | 30 September 2014 06:01 CEST | Original file | - |
| article xml file uploaded | 30 September 2014 06:01 CEST | Original file | https://www.mdpi.com/2072-6643/6/9/3451/xml |
| article pdf uploaded. | 3 September 2014 12:03 CEST | Version of Record | https://www.mdpi.com/2072-6643/6/9/3451/pdf |
