| article html file updated | 11 February 2020 06:38 CET | Update | https://www.mdpi.com/2410-390X/3/1/4 |
| article html file updated | 12 October 2019 20:36 CEST | Update | - |
| article html file updated | 27 April 2019 11:34 CEST | Update | - |
| article html file updated | 13 April 2019 07:33 CEST | Update | - |
| article html file updated | 2 April 2019 22:00 CEST | Update | - |
| article html file updated | 4 January 2019 09:19 CET | Original file | - |
| article pdf uploaded. | 4 January 2019 09:17 CET | Version of Record | https://www.mdpi.com/2410-390X/3/1/4/pdf |
| article xml uploaded. | 4 January 2019 09:17 CET | Update | https://www.mdpi.com/2410-390X/3/1/4/xml |
| article xml file uploaded | 4 January 2019 09:17 CET | Original file | - |
