| article html file updated | 20 April 2021 11:07 CEST | Original file | https://www.mdpi.com/2313-433X/7/4/74 |
| article pdf uploaded. | 20 April 2021 11:05 CEST | Version of Record | https://www.mdpi.com/2313-433X/7/4/74/pdf |
| article xml uploaded. | 20 April 2021 11:05 CEST | Update | https://www.mdpi.com/2313-433X/7/4/74/xml |
| article xml file uploaded | 20 April 2021 11:05 CEST | Original file | - |
