| article html file updated | 31 July 2022 01:24 CEST | Update | https://www.mdpi.com/2218-1997/8/1/20 |
| article html file updated | 31 December 2021 10:07 CET | Update | - |
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| article xml uploaded. | 31 December 2021 09:42 CET | Update | https://www.mdpi.com/2218-1997/8/1/20/xml |
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| article pdf uploaded. | 30 December 2021 16:44 CET | Version of Record | https://www.mdpi.com/2218-1997/8/1/20/pdf-vor |
