| article html file updated | 1 September 2025 16:43 CEST | Update | https://www.mdpi.com/2226-471X/6/1/2 |
| article html file updated | 23 July 2022 06:34 CEST | Update | - |
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| article html file updated | 31 December 2020 03:14 CET | Update | - |
| article pdf uploaded. | 31 December 2020 03:13 CET | Updated version of record | https://www.mdpi.com/2226-471X/6/1/2/pdf |
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| article html file updated | 22 December 2020 15:52 CET | Original file | - |
| article pdf uploaded. | 22 December 2020 15:50 CET | Version of Record | https://www.mdpi.com/2226-471X/6/1/2/pdf-vor |
| article xml uploaded. | 22 December 2020 15:50 CET | Update | - |
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