| article html file updated | 8 February 2020 19:01 CET | Update | https://www.mdpi.com/2313-7673/2/4/20 |
| article html file updated | 27 September 2019 21:48 CEST | Update | - |
| article html file updated | 2 May 2019 19:58 CEST | Update | - |
| article html file updated | 2 January 2018 12:17 CET | Update | - |
| article html file updated | 23 October 2017 10:07 CEST | Original file | - |
| article xml uploaded. | 23 October 2017 10:06 CEST | Update | https://www.mdpi.com/2313-7673/2/4/20/xml |
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| article xml uploaded. | 23 October 2017 10:06 CEST | Original file | - |
| article pdf uploaded. | 23 October 2017 10:06 CEST | Updated version of record | https://www.mdpi.com/2313-7673/2/4/20/pdf |
| article pdf uploaded. | 20 October 2017 16:58 CEST | Version of Record | https://www.mdpi.com/2313-7673/2/4/20/pdf-vor |
