| article html file updated | 31 January 2021 11:57 CET | Update | https://www.mdpi.com/2218-1989/11/2/68 |
| article pdf uploaded. | 31 January 2021 11:56 CET | Updated version of record | https://www.mdpi.com/2218-1989/11/2/68/pdf |
| article xml uploaded. | 31 January 2021 11:56 CET | Update | https://www.mdpi.com/2218-1989/11/2/68/xml |
| article xml file uploaded | 31 January 2021 11:56 CET | Update | - |
| article html file updated | 26 January 2021 08:49 CET | Original file | - |
| article pdf uploaded. | 26 January 2021 08:48 CET | Version of Record | https://www.mdpi.com/2218-1989/11/2/68/pdf-vor |
| article xml uploaded. | 26 January 2021 08:48 CET | Update | - |
| article xml file uploaded | 26 January 2021 08:48 CET | Original file | - |
