| article html file updated | 31 August 2025 05:55 CEST | Update | https://www.mdpi.com/2312-7481/5/4/67 |
| article html file updated | 19 July 2022 22:19 CEST | Update | - |
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| article html file updated | 31 December 2019 19:59 CET | Update | - |
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| article pdf uploaded. | 18 December 2019 09:45 CET | Updated version of record | https://www.mdpi.com/2312-7481/5/4/67/pdf |
| article xml uploaded. | 18 December 2019 09:45 CET | Update | https://www.mdpi.com/2312-7481/5/4/67/xml |
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| article pdf uploaded. | 6 December 2019 11:40 CET | Version of Record | https://www.mdpi.com/2312-7481/5/4/67/pdf-vor |
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