| article html file updated | 6 July 2021 09:55 CEST | Original file | https://www.mdpi.com/2077-1444/12/7/502 |
| article pdf uploaded. | 6 July 2021 09:53 CEST | Version of Record | https://www.mdpi.com/2077-1444/12/7/502/pdf |
| article xml uploaded. | 6 July 2021 09:53 CEST | Update | https://www.mdpi.com/2077-1444/12/7/502/xml |
| article xml file uploaded | 6 July 2021 09:53 CEST | Original file | - |
