| article html file updated | 2 September 2025 04:17 CEST | Update | https://www.mdpi.com/2227-9067/8/4/309 |
| article html file updated | 25 July 2022 12:49 CEST | Update | N/A |
| article html file updated | 22 April 2021 03:14 CEST | Update | N/A |
| article pdf uploaded. | 22 April 2021 03:13 CEST | Updated version of record | https://www.mdpi.com/2227-9067/8/4/309/pdf |
| article xml uploaded. | 22 April 2021 03:13 CEST | Update | https://www.mdpi.com/2227-9067/8/4/309/xml |
| article xml file uploaded | 22 April 2021 03:13 CEST | Update | N/A |
| article html file updated | 19 April 2021 14:33 CEST | Update | N/A |
| article pdf uploaded. | 19 April 2021 14:31 CEST | Updated version of record | https://www.mdpi.com/2227-9067/8/4/309/pdf-vor |
| article xml file uploaded | 19 April 2021 14:31 CEST | Update | N/A |
| article html file updated | 19 April 2021 14:26 CEST | Update | N/A |
| article pdf uploaded. | 19 April 2021 14:25 CEST | Updated version of record | https://www.mdpi.com/2227-9067/8/4/309/pdf-vor |
| article xml file uploaded | 19 April 2021 14:25 CEST | Update | N/A |
| article html file updated | 19 April 2021 07:05 CEST | Original file | N/A |
| article pdf uploaded. | 19 April 2021 07:04 CEST | Version of Record | https://www.mdpi.com/2227-9067/8/4/309/pdf-vor |
| article xml file uploaded | 19 April 2021 07:04 CEST | Original file | N/A |
