| article html file updated | 16 June 2021 11:42 CEST | Original file | https://www.mdpi.com/2079-3197/9/6/72 |
| article pdf uploaded. | 16 June 2021 11:41 CEST | Version of Record | https://www.mdpi.com/2079-3197/9/6/72/pdf |
| article xml uploaded. | 16 June 2021 11:41 CEST | Update | https://www.mdpi.com/2079-3197/9/6/72/xml |
| article xml file uploaded | 16 June 2021 11:41 CEST | Original file | N/A |
