| article html file updated | 4 May 2020 12:10 CEST | Original file | https://www.mdpi.com/2071-1050/12/9/3721 |
| article pdf uploaded. | 4 May 2020 12:09 CEST | Version of Record | https://www.mdpi.com/2071-1050/12/9/3721/pdf |
| article xml uploaded. | 4 May 2020 12:09 CEST | Update | https://www.mdpi.com/2071-1050/12/9/3721/xml |
| article xml file uploaded | 4 May 2020 12:09 CEST | Original file | N/A |
