| article html file updated | 7 February 2020 07:18 CET | Update | https://www.mdpi.com/2073-4360/8/4/127 |
| article html file updated | 21 September 2019 15:13 CEST | Update | - |
| article html file updated | 5 May 2019 18:34 CEST | Update | - |
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| article html file updated | 29 April 2016 09:51 CEST | Update | - |
| article html file updated | 15 April 2016 09:16 CEST | Original file | - |
| article xml uploaded. | 15 April 2016 09:14 CEST | Update | https://www.mdpi.com/2073-4360/8/4/127/xml |
| article pdf uploaded. | 15 April 2016 09:14 CEST | Version of Record | https://www.mdpi.com/2073-4360/8/4/127/pdf |
