| article html file updated | 1 December 2020 06:01 CET | Original file | https://www.mdpi.com/2409-9287/5/4/40 |
| article pdf uploaded. | 1 December 2020 06:00 CET | Version of Record | https://www.mdpi.com/2409-9287/5/4/40/pdf |
| article xml uploaded. | 1 December 2020 06:00 CET | Update | https://www.mdpi.com/2409-9287/5/4/40/xml |
| article xml file uploaded | 1 December 2020 06:00 CET | Original file | N/A |
