| article html file updated | 30 August 2025 10:32 CEST | Update | https://www.mdpi.com/1996-1073/12/1/153 |
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| article pdf uploaded. | 3 January 2019 10:28 CET | Updated version of record | https://www.mdpi.com/1996-1073/12/1/153/pdf |
| article xml uploaded. | 3 January 2019 10:28 CET | Update | https://www.mdpi.com/1996-1073/12/1/153/xml |
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| article pdf uploaded. | 2 January 2019 13:19 CET | Version of Record | https://www.mdpi.com/1996-1073/12/1/153/pdf-vor |
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