| article html file updated | 16 June 2021 12:16 CEST | Original file | https://www.mdpi.com/2077-1444/12/6/447 |
| article pdf uploaded. | 16 June 2021 12:15 CEST | Version of Record | https://www.mdpi.com/2077-1444/12/6/447/pdf |
| article xml uploaded. | 16 June 2021 12:15 CEST | Update | https://www.mdpi.com/2077-1444/12/6/447/xml |
| article xml file uploaded | 16 June 2021 12:15 CEST | Original file | N/A |
