| article html file updated | 11 February 2020 05:38 CET | Update | https://www.mdpi.com/2413-8851/3/1/4 |
| article html file updated | 12 October 2019 14:26 CEST | Update | - |
| article html file updated | 27 April 2019 13:46 CEST | Update | - |
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| article html file updated | 2 April 2019 19:37 CEST | Update | - |
| article html file updated | 28 December 2018 08:43 CET | Original file | - |
| article pdf uploaded. | 28 December 2018 08:41 CET | Version of Record | https://www.mdpi.com/2413-8851/3/1/4/pdf |
| article xml uploaded. | 28 December 2018 08:41 CET | Update | https://www.mdpi.com/2413-8851/3/1/4/xml |
| article xml file uploaded | 28 December 2018 08:41 CET | Original file | - |
