| article html file updated | 15 February 2020 04:22 CET | Update | https://www.mdpi.com/2226-4310/7/1/9 |
| article html file updated | 7 February 2020 05:13 CET | Update | - |
| article html file updated | 19 January 2020 10:31 CET | Original file | - |
| article pdf uploaded. | 19 January 2020 10:30 CET | Updated version of record | https://www.mdpi.com/2226-4310/7/1/9/pdf |
| article pdf uploaded. | 19 January 2020 10:30 CET | Version of Record | - |
| article xml uploaded. | 19 January 2020 10:30 CET | Update | https://www.mdpi.com/2226-4310/7/1/9/xml |
| article xml file uploaded | 19 January 2020 10:30 CET | Original file | - |
