| article html file updated | 22 January 2021 03:30 CET | Original file | https://www.mdpi.com/2227-9032/9/2/104 |
| article pdf uploaded. | 22 January 2021 03:28 CET | Updated version of record | https://www.mdpi.com/2227-9032/9/2/104/pdf |
| article xml uploaded. | 22 January 2021 03:28 CET | Update | https://www.mdpi.com/2227-9032/9/2/104/xml |
| article xml file uploaded | 22 January 2021 03:28 CET | Original file | N/A |
| article pdf uploaded. | 20 January 2021 11:31 CET | Version of Record | https://www.mdpi.com/2227-9032/9/2/104/pdf-vor |
