| article html file updated | 22 June 2021 13:10 CEST | Original file | https://www.mdpi.com/2073-4360/13/13/2039 |
| article pdf uploaded. | 22 June 2021 13:09 CEST | Version of Record | https://www.mdpi.com/2073-4360/13/13/2039/pdf |
| article xml uploaded. | 22 June 2021 13:09 CEST | Update | https://www.mdpi.com/2073-4360/13/13/2039/xml |
| article xml file uploaded | 22 June 2021 13:09 CEST | Original file | N/A |
