| article html file updated | 31 August 2025 06:49 CEST | Update | https://www.mdpi.com/2223-7747/8/12/616 |
| article html file updated | 19 July 2022 21:27 CEST | Update | - |
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| article html file updated | 31 December 2019 03:31 CET | Update | - |
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| article pdf uploaded. | 19 December 2019 09:48 CET | Updated version of record | https://www.mdpi.com/2223-7747/8/12/616/pdf |
| article xml uploaded. | 19 December 2019 09:48 CET | Update | https://www.mdpi.com/2223-7747/8/12/616/xml |
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| article pdf uploaded. | 17 December 2019 20:59 CET | Version of Record | https://www.mdpi.com/2223-7747/8/12/616/pdf-vor |
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