| article html file updated | 31 May 2021 16:21 CEST | Original file | https://www.mdpi.com/2077-1444/12/6/404 |
| article pdf uploaded. | 31 May 2021 16:20 CEST | Version of Record | https://www.mdpi.com/2077-1444/12/6/404/pdf |
| article xml uploaded. | 31 May 2021 16:20 CEST | Update | https://www.mdpi.com/2077-1444/12/6/404/xml |
| article xml file uploaded | 31 May 2021 16:20 CEST | Original file | - |
