| article html file updated | 17 August 2026 07:43 CEST | Update | https://www.mdpi.com/2227-7390/8/4/502 |
| article html file updated | 31 August 2025 16:16 CEST | Update | N/A |
| article html file updated | 21 July 2022 00:45 CEST | Update | N/A |
| article html file updated | 3 April 2020 14:21 CEST | Original file | N/A |
| article pdf uploaded. | 3 April 2020 14:20 CEST | Updated version of record | https://www.mdpi.com/2227-7390/8/4/502/pdf |
| article xml uploaded. | 3 April 2020 14:20 CEST | Update | https://www.mdpi.com/2227-7390/8/4/502/xml |
| article xml file uploaded | 3 April 2020 14:20 CEST | Update | N/A |
| article pdf uploaded. | 2 April 2020 13:39 CEST | Updated version of record | https://www.mdpi.com/2227-7390/8/4/502/pdf-vor |
| article xml file uploaded | 2 April 2020 13:39 CEST | Update | N/A |
| article pdf uploaded. | 2 April 2020 13:38 CEST | Version of Record | https://www.mdpi.com/2227-7390/8/4/502/pdf-vor |
| article xml file uploaded | 2 April 2020 13:38 CEST | Original file | N/A |
