| article html file updated | 30 August 2025 09:50 CEST | Update | https://www.mdpi.com/1996-1944/11/12/2521 |
| article html file updated | 17 July 2022 14:59 CEST | Update | - |
| article html file updated | 11 February 2020 02:37 CET | Update | - |
| article html file updated | 11 October 2019 19:45 CEST | Update | - |
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| article html file updated | 26 December 2018 19:54 CET | Update | - |
| article html file updated | 14 December 2018 11:25 CET | Original file | - |
| article pdf uploaded. | 14 December 2018 11:24 CET | Updated version of record | https://www.mdpi.com/1996-1944/11/12/2521/pdf |
| article xml uploaded. | 14 December 2018 11:24 CET | Update | https://www.mdpi.com/1996-1944/11/12/2521/xml |
| article xml file uploaded | 14 December 2018 11:24 CET | Update | - |
| article pdf uploaded. | 11 December 2018 16:52 CET | Updated version of record | https://www.mdpi.com/1996-1944/11/12/2521/pdf-vor |
| article pdf uploaded. | 11 December 2018 16:45 CET | Version of Record | https://www.mdpi.com/1996-1944/11/12/2521/pdf-vor |
| article xml file uploaded | 11 December 2018 16:45 CET | Original file | - |
