| article html file updated | 31 August 2025 16:15 CEST | Update | https://www.mdpi.com/2227-7390/8/4/501 |
| article html file updated | 21 July 2022 00:44 CEST | Update | - |
| article html file updated | 7 April 2020 05:43 CEST | Original file | - |
| article pdf uploaded. | 7 April 2020 05:41 CEST | Updated version of record | https://www.mdpi.com/2227-7390/8/4/501/pdf |
| article xml uploaded. | 7 April 2020 05:41 CEST | Update | https://www.mdpi.com/2227-7390/8/4/501/xml |
| article xml file uploaded | 7 April 2020 05:41 CEST | Update | - |
| article pdf uploaded. | 2 April 2020 13:32 CEST | Version of Record | https://www.mdpi.com/2227-7390/8/4/501/pdf-vor |
| article xml file uploaded | 2 April 2020 13:32 CEST | Original file | - |
