| article html file updated | 24 December 2025 16:53 CET | Update | https://www.mdpi.com/1996-1073/13/1/137 |
| article html file updated | 31 August 2025 07:33 CEST | Update | - |
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| article html file updated | 26 December 2019 14:29 CET | Original file | - |
| article pdf uploaded. | 26 December 2019 14:27 CET | Version of Record | https://www.mdpi.com/1996-1073/13/1/137/pdf |
| article xml uploaded. | 26 December 2019 14:27 CET | Update | https://www.mdpi.com/1996-1073/13/1/137/xml |
| article xml file uploaded | 26 December 2019 14:27 CET | Original file | - |
