| article html file updated | 30 August 2025 11:03 CEST | Update | https://www.mdpi.com/1996-1073/12/2/252 |
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| article pdf uploaded. | 15 January 2019 12:23 CET | Version of Record | https://www.mdpi.com/1996-1073/12/2/252/pdf |
| article xml uploaded. | 15 January 2019 12:23 CET | Update | https://www.mdpi.com/1996-1073/12/2/252/xml |
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