| article html file updated | 4 August 2021 22:07 CEST | Update | https://www.mdpi.com/2227-9091/9/4/71 |
| article html file updated | 13 April 2021 10:03 CEST | Update | N/A |
| article html file updated | 13 April 2021 08:22 CEST | Original file | N/A |
| article pdf uploaded. | 13 April 2021 08:21 CEST | Updated version of record | https://www.mdpi.com/2227-9091/9/4/71/pdf |
| article xml uploaded. | 13 April 2021 08:21 CEST | Update | https://www.mdpi.com/2227-9091/9/4/71/xml |
| article xml file uploaded | 13 April 2021 08:21 CEST | Original file | N/A |
| article pdf uploaded. | 10 April 2021 09:18 CEST | Version of Record | https://www.mdpi.com/2227-9091/9/4/71/pdf-vor |
