| article html file updated | 30 August 2025 05:45 CEST | Update | https://www.mdpi.com/1996-1073/11/8/2009 |
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| article pdf uploaded. | 2 August 2018 11:44 CEST | Version of Record | https://www.mdpi.com/1996-1073/11/8/2009/pdf |
| article xml uploaded. | 2 August 2018 11:44 CEST | Update | https://www.mdpi.com/1996-1073/11/8/2009/xml |
| article xml file uploaded | 2 August 2018 11:44 CEST | Original file | - |
