| article html file updated | 31 August 2025 18:09 CEST | Update | https://www.mdpi.com/2227-7390/8/4/639 |
| article html file updated | 21 July 2022 02:36 CEST | Update | - |
| article html file updated | 26 April 2020 11:51 CEST | Original file | - |
| article pdf uploaded. | 26 April 2020 11:50 CEST | Updated version of record | https://www.mdpi.com/2227-7390/8/4/639/pdf |
| article xml uploaded. | 26 April 2020 11:50 CEST | Update | https://www.mdpi.com/2227-7390/8/4/639/xml |
| article xml file uploaded | 26 April 2020 11:50 CEST | Update | - |
| article pdf uploaded. | 21 April 2020 18:05 CEST | Version of Record | https://www.mdpi.com/2227-7390/8/4/639/pdf-vor |
| article xml file uploaded | 21 April 2020 18:05 CEST | Original file | - |
