| article html file updated | 14 February 2020 23:55 CET | Update | https://www.mdpi.com/2305-7084/4/1/2 |
| article html file updated | 10 January 2020 03:19 CET | Original file | - |
| article pdf uploaded. | 3 January 2020 11:34 CET | Version of Record | https://www.mdpi.com/2305-7084/4/1/2/pdf |
| article xml uploaded. | 3 January 2020 11:34 CET | Update | https://www.mdpi.com/2305-7084/4/1/2/xml |
| article xml file uploaded | 3 January 2020 11:34 CET | Original file | - |
