| article html file updated | 31 August 2025 16:15 CEST | Update | https://www.mdpi.com/2218-6581/9/2/20 |
| article html file updated | 21 July 2022 00:44 CEST | Update | - |
| article html file updated | 15 April 2020 07:11 CEST | Original file | - |
| article pdf uploaded. | 15 April 2020 07:09 CEST | Updated version of record | https://www.mdpi.com/2218-6581/9/2/20/pdf |
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| article pdf uploaded. | 2 April 2020 13:06 CEST | Version of Record | https://www.mdpi.com/2218-6581/9/2/20/pdf-vor |
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