| article html file updated | 31 August 2025 07:12 CEST | Update | https://www.mdpi.com/1996-1073/13/1/69 |
| article html file updated | 19 July 2022 21:04 CEST | Update | - |
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| article html file updated | 26 December 2019 11:19 CET | Original file | - |
| article pdf uploaded. | 26 December 2019 11:18 CET | Updated version of record | https://www.mdpi.com/1996-1073/13/1/69/pdf |
| article xml uploaded. | 26 December 2019 11:18 CET | Update | https://www.mdpi.com/1996-1073/13/1/69/xml |
| article xml file uploaded | 26 December 2019 11:18 CET | Update | - |
| article pdf uploaded. | 21 December 2019 12:03 CET | Version of Record | https://www.mdpi.com/1996-1073/13/1/69/pdf-vor |
| article xml file uploaded | 21 December 2019 12:03 CET | Original file | - |
