| article html file updated | 3 August 2021 06:35 CEST | Update | https://www.mdpi.com/1999-4915/13/4/561 |
| article html file updated | 10 April 2021 01:41 CEST | Update | N/A |
| article html file updated | 26 March 2021 11:16 CET | Update | N/A |
| article pdf uploaded. | 26 March 2021 11:15 CET | Updated version of record | https://www.mdpi.com/1999-4915/13/4/561/pdf |
| article xml uploaded. | 26 March 2021 11:15 CET | Update | https://www.mdpi.com/1999-4915/13/4/561/xml |
| article xml file uploaded | 26 March 2021 11:15 CET | Update | N/A |
| article html file updated | 26 March 2021 11:08 CET | Original file | N/A |
| article xml file uploaded | 26 March 2021 11:06 CET | Original file | N/A |
