| article html file updated | 16 April 2021 09:03 CEST | Original file | https://www.mdpi.com/2077-1312/9/4/429 |
| article pdf uploaded. | 16 April 2021 09:02 CEST | Updated version of record | https://www.mdpi.com/2077-1312/9/4/429/pdf |
| article xml uploaded. | 16 April 2021 09:02 CEST | Update | https://www.mdpi.com/2077-1312/9/4/429/xml |
| article xml file uploaded | 16 April 2021 09:02 CEST | Original file | - |
| article pdf uploaded. | 15 April 2021 15:42 CEST | Version of Record | https://www.mdpi.com/2077-1312/9/4/429/pdf-vor |
