| article html file updated | 31 August 2025 12:28 CEST | Update | https://www.mdpi.com/2076-0760/9/2/21 |
| article html file updated | 20 July 2022 20:59 CEST | Update | - |
| article html file updated | 29 February 2020 08:23 CET | Original file | - |
| article pdf uploaded. | 29 February 2020 08:20 CET | Updated version of record | https://www.mdpi.com/2076-0760/9/2/21/pdf |
| article xml uploaded. | 29 February 2020 08:20 CET | Update | https://www.mdpi.com/2076-0760/9/2/21/xml |
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| article pdf uploaded. | 22 February 2020 13:22 CET | Version of Record | https://www.mdpi.com/2076-0760/9/2/21/pdf-vor |
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