| article html file updated | 15 July 2021 10:34 CEST | Original file | https://www.mdpi.com/2313-4321/6/3/50 |
| article pdf uploaded. | 15 July 2021 10:32 CEST | Version of Record | https://www.mdpi.com/2313-4321/6/3/50/pdf |
| article xml uploaded. | 15 July 2021 10:32 CEST | Update | https://www.mdpi.com/2313-4321/6/3/50/xml |
| article xml file uploaded | 15 July 2021 10:32 CEST | Original file | N/A |
