| article html file updated | 24 December 2025 18:27 CET | Update | https://www.mdpi.com/2223-7747/9/4/521 |
| article html file updated | 31 August 2025 17:43 CEST | Update | N/A |
| article html file updated | 21 July 2022 02:12 CEST | Update | N/A |
| article html file updated | 9 May 2020 04:35 CEST | Update | N/A |
| article html file updated | 20 April 2020 14:22 CEST | Update | N/A |
| article pdf uploaded. | 20 April 2020 14:21 CEST | Updated version of record | https://www.mdpi.com/2223-7747/9/4/521/pdf |
| article xml uploaded. | 20 April 2020 14:21 CEST | Update | https://www.mdpi.com/2223-7747/9/4/521/xml |
| article xml file uploaded | 20 April 2020 14:21 CEST | Update | N/A |
| article html file updated | 17 April 2020 13:46 CEST | Update | N/A |
| article html file updated | 17 April 2020 13:46 CEST | Original file | N/A |
| article pdf uploaded. | 17 April 2020 13:45 CEST | Updated version of record | https://www.mdpi.com/2223-7747/9/4/521/pdf-vor |
| article xml file uploaded | 17 April 2020 13:45 CEST | Update | N/A |
| article xml file uploaded | 17 April 2020 13:45 CEST | Update | N/A |
| article supplementary file uploaded. | 17 April 2020 13:45 CEST | - | https://www.mdpi.com/2223-7747/9/4/521#supplementary |
| article pdf uploaded. | 17 April 2020 13:45 CEST | Version of Record | https://www.mdpi.com/2223-7747/9/4/521/pdf-vor |
