| article html file updated | 15 February 2020 07:25 CET | Update | https://www.mdpi.com/2571-9637/3/1/6 |
| article html file updated | 3 February 2020 13:44 CET | Original file | - |
| article pdf uploaded. | 3 February 2020 13:43 CET | Version of Record | https://www.mdpi.com/2571-9637/3/1/6/pdf |
| article xml uploaded. | 3 February 2020 13:43 CET | Update | https://www.mdpi.com/2571-9637/3/1/6/xml |
| article xml file uploaded | 3 February 2020 13:43 CET | Original file | - |
