| article html file updated | 31 August 2025 05:38 CEST | Update | https://www.mdpi.com/2079-6374/9/4/139 |
| article html file updated | 19 July 2022 22:37 CEST | Update | - |
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| article html file updated | 30 December 2019 10:56 CET | Update | - |
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| article pdf uploaded. | 18 December 2019 08:45 CET | Updated version of record | https://www.mdpi.com/2079-6374/9/4/139/pdf |
| article xml uploaded. | 18 December 2019 08:45 CET | Update | https://www.mdpi.com/2079-6374/9/4/139/xml |
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| article pdf uploaded. | 3 December 2019 13:53 CET | Version of Record | https://www.mdpi.com/2079-6374/9/4/139/pdf-vor |
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