| article html file updated | 31 August 2025 06:53 CEST | Update | https://www.mdpi.com/2071-1050/12/1/21 |
| article html file updated | 19 July 2022 21:23 CEST | Update | N/A |
| article html file updated | 14 February 2020 19:47 CET | Update | N/A |
| article html file updated | 24 December 2019 14:12 CET | Original file | N/A |
| article pdf uploaded. | 24 December 2019 14:11 CET | Updated version of record | https://www.mdpi.com/2071-1050/12/1/21/pdf |
| article xml uploaded. | 24 December 2019 14:11 CET | Update | https://www.mdpi.com/2071-1050/12/1/21/xml |
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| article pdf uploaded. | 18 December 2019 14:12 CET | Version of Record | https://www.mdpi.com/2071-1050/12/1/21/pdf-vor |
| article xml file uploaded | 18 December 2019 14:12 CET | Original file | N/A |
