| article html file updated | 7 February 2020 10:16 CET | Update | https://www.mdpi.com/2073-4360/8/6/234 |
| article html file updated | 21 September 2019 19:09 CEST | Update | - |
| article html file updated | 5 May 2019 12:45 CEST | Update | - |
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| article html file updated | 29 June 2016 11:42 CEST | Update | - |
| article html file updated | 16 June 2016 12:55 CEST | Original file | - |
| article xml uploaded. | 16 June 2016 12:53 CEST | Original file | https://www.mdpi.com/2073-4360/8/6/234/xml |
| article pdf uploaded. | 16 June 2016 12:53 CEST | Version of Record | https://www.mdpi.com/2073-4360/8/6/234/pdf |
