| article html file updated | 2 September 2025 04:11 CEST | Update | https://www.mdpi.com/2227-9067/8/4/306 |
| article html file updated | 25 July 2022 12:41 CEST | Update | - |
| article html file updated | 21 April 2021 03:06 CEST | Update | - |
| article pdf uploaded. | 21 April 2021 03:05 CEST | Updated version of record | https://www.mdpi.com/2227-9067/8/4/306/pdf |
| article xml uploaded. | 21 April 2021 03:05 CEST | Update | https://www.mdpi.com/2227-9067/8/4/306/xml |
| article xml file uploaded | 21 April 2021 03:05 CEST | Update | - |
| article html file updated | 19 April 2021 08:32 CEST | Update | - |
| article pdf uploaded. | 19 April 2021 08:31 CEST | Updated version of record | https://www.mdpi.com/2227-9067/8/4/306/pdf-vor |
| article xml file uploaded | 19 April 2021 08:31 CEST | Update | - |
| article html file updated | 17 April 2021 11:27 CEST | Original file | - |
| article pdf uploaded. | 17 April 2021 11:26 CEST | Version of Record | https://www.mdpi.com/2227-9067/8/4/306/pdf-vor |
| article xml file uploaded | 17 April 2021 11:26 CEST | Original file | - |
