| article html file updated | 3 August 2021 06:46 CEST | Update | https://www.mdpi.com/2227-7390/9/7/721 |
| article html file updated | 10 April 2021 01:51 CEST | Update | - |
| article html file updated | 26 March 2021 11:35 CET | Original file | - |
| article pdf uploaded. | 26 March 2021 11:34 CET | Version of Record | https://www.mdpi.com/2227-7390/9/7/721/pdf |
| article xml uploaded. | 26 March 2021 11:34 CET | Update | https://www.mdpi.com/2227-7390/9/7/721/xml |
| article xml file uploaded | 26 March 2021 11:34 CET | Original file | - |
