| article html file updated | 3 August 2021 12:34 CEST | Update | https://www.mdpi.com/2227-9717/9/4/591 |
| article html file updated | 10 April 2021 07:35 CEST | Update | N/A |
| article html file updated | 30 March 2021 08:31 CEST | Original file | N/A |
| article pdf uploaded. | 30 March 2021 08:27 CEST | Updated version of record | https://www.mdpi.com/2227-9717/9/4/591/pdf |
| article xml uploaded. | 30 March 2021 08:27 CEST | Update | https://www.mdpi.com/2227-9717/9/4/591/xml |
| article xml file uploaded | 30 March 2021 08:27 CEST | Original file | N/A |
| article pdf uploaded. | 29 March 2021 11:35 CEST | Version of Record | https://www.mdpi.com/2227-9717/9/4/591/pdf-vor |
