| article html file updated | 7 February 2020 13:02 CET | Update | https://www.mdpi.com/1996-1073/9/8/624 |
| article html file updated | 5 May 2019 07:38 CEST | Update | - |
| article html file updated | 27 March 2019 13:05 CET | Update | - |
| article html file updated | 25 August 2016 11:32 CEST | Update | - |
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| article html file updated | 9 August 2016 09:32 CEST | Original file | - |
| article xml uploaded. | 9 August 2016 09:31 CEST | Update | https://www.mdpi.com/1996-1073/9/8/624/xml |
| article pdf uploaded. | 9 August 2016 09:31 CEST | Version of Record | https://www.mdpi.com/1996-1073/9/8/624/pdf |
