| article html file updated | 31 August 2025 04:03 CEST | Update | https://www.mdpi.com/1996-1073/12/21/4207 |
| article html file updated | 20 July 2022 00:18 CEST | Update | - |
| article html file updated | 14 February 2020 06:41 CET | Update | - |
| article html file updated | 15 November 2019 09:34 CET | Update | - |
| article html file updated | 5 November 2019 06:55 CET | Update | - |
| article xml uploaded. | 5 November 2019 06:54 CET | Update | https://www.mdpi.com/1996-1073/12/21/4207/xml |
| article xml uploaded. | 5 November 2019 06:54 CET | Update | - |
| article xml uploaded. | 5 November 2019 06:54 CET | Update | - |
| article xml uploaded. | 5 November 2019 06:54 CET | Update | - |
| article pdf uploaded. | 5 November 2019 06:54 CET | Updated version of record | https://www.mdpi.com/1996-1073/12/21/4207/pdf |
| article html file updated | 4 November 2019 13:05 CET | Original file | - |
| article pdf uploaded. | 4 November 2019 13:04 CET | Version of Record | https://www.mdpi.com/1996-1073/12/21/4207/pdf-vor |
| article xml uploaded. | 4 November 2019 13:04 CET | Update | - |
| article xml file uploaded | 4 November 2019 13:04 CET | Original file | - |
