| article html file updated | 31 August 2025 07:28 CEST | Update | https://www.mdpi.com/2223-7747/9/1/37 |
| article html file updated | 19 July 2022 20:49 CEST | Update | - |
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| article html file updated | 27 December 2019 09:31 CET | Original file | - |
| article pdf uploaded. | 27 December 2019 09:30 CET | Updated version of record | https://www.mdpi.com/2223-7747/9/1/37/pdf |
| article xml uploaded. | 27 December 2019 09:30 CET | Update | https://www.mdpi.com/2223-7747/9/1/37/xml |
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| article pdf uploaded. | 25 December 2019 12:58 CET | Version of Record | https://www.mdpi.com/2223-7747/9/1/37/pdf-vor |
| article xml file uploaded | 25 December 2019 12:58 CET | Original file | - |
