| article html file updated | 31 August 2025 06:56 CEST | Update | https://www.mdpi.com/2071-1050/12/1/39 |
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| article html file updated | 14 February 2020 19:56 CET | Update | - |
| article html file updated | 20 December 2019 17:11 CET | Original file | - |
| article pdf uploaded. | 20 December 2019 17:10 CET | Updated version of record | https://www.mdpi.com/2071-1050/12/1/39/pdf |
| article xml uploaded. | 20 December 2019 17:10 CET | Update | https://www.mdpi.com/2071-1050/12/1/39/xml |
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| article pdf uploaded. | 19 December 2019 09:49 CET | Version of Record | https://www.mdpi.com/2071-1050/12/1/39/pdf-vor |
| article xml file uploaded | 19 December 2019 09:49 CET | Original file | - |
