| article html file updated | 31 August 2025 06:52 CEST | Update | https://www.mdpi.com/2076-2607/8/1/6 |
| article html file updated | 19 July 2022 21:24 CEST | Update | - |
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| article html file updated | 26 December 2019 03:53 CET | Original file | - |
| article pdf uploaded. | 26 December 2019 03:51 CET | Updated version of record | https://www.mdpi.com/2076-2607/8/1/6/pdf |
| article xml uploaded. | 26 December 2019 03:51 CET | Update | https://www.mdpi.com/2076-2607/8/1/6/xml |
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| article pdf uploaded. | 18 December 2019 13:29 CET | Version of Record | https://www.mdpi.com/2076-2607/8/1/6/pdf-vor |
| article xml file uploaded | 18 December 2019 13:29 CET | Original file | - |
