| article html file updated | 30 August 2025 10:20 CEST | Update | https://www.mdpi.com/1996-1073/12/1/56 |
| article html file updated | 17 July 2022 18:41 CEST | Update | - |
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| article pdf uploaded. | 15 January 2019 07:41 CET | Updated version of record | https://www.mdpi.com/1996-1073/12/1/56/pdf |
| article html file updated | 25 December 2018 09:50 CET | Original file | - |
| article pdf uploaded. | 25 December 2018 09:49 CET | Version of Record | https://www.mdpi.com/1996-1073/12/1/56/pdf-vor |
| article xml uploaded. | 25 December 2018 09:49 CET | Update | https://www.mdpi.com/1996-1073/12/1/56/xml |
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