| article html file updated | 3 August 2021 15:24 CEST | Update | https://www.mdpi.com/2227-9717/9/4/600 |
| article html file updated | 10 April 2021 11:09 CEST | Update | - |
| article html file updated | 30 March 2021 12:10 CEST | Original file | - |
| article pdf uploaded. | 30 March 2021 12:09 CEST | Updated version of record | https://www.mdpi.com/2227-9717/9/4/600/pdf |
| article xml uploaded. | 30 March 2021 12:09 CEST | Update | https://www.mdpi.com/2227-9717/9/4/600/xml |
| article xml file uploaded | 30 March 2021 12:09 CEST | Update | - |
| article xml file uploaded | 30 March 2021 10:58 CEST | Original file | - |
