| article html file updated | 8 October 2020 16:51 CEST | Update | https://www.mdpi.com/2313-0105/6/1/7 |
| article html file updated | 2 April 2020 07:19 CEST | Update | - |
| article html file updated | 27 March 2020 05:32 CET | Original file | - |
| article pdf uploaded. | 27 March 2020 05:30 CET | Updated version of record | https://www.mdpi.com/2313-0105/6/1/7/pdf |
| article xml uploaded. | 27 March 2020 05:30 CET | Update | https://www.mdpi.com/2313-0105/6/1/7/xml |
| article xml file uploaded | 27 March 2020 05:30 CET | Update | - |
| article pdf uploaded. | 21 January 2020 10:06 CET | Version of Record | - |
| article xml file uploaded | 21 January 2020 10:06 CET | Original file | - |
