| article html file updated | 30 August 2025 14:50 CEST | Update | https://www.mdpi.com/1422-0067/20/9/2281 |
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| article pdf uploaded. | 9 May 2019 12:05 CEST | Updated version of record | https://www.mdpi.com/1422-0067/20/9/2281/pdf |
| article xml uploaded. | 9 May 2019 12:05 CEST | Update | https://www.mdpi.com/1422-0067/20/9/2281/xml |
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| article pdf uploaded. | 8 May 2019 16:12 CEST | Version of Record | https://www.mdpi.com/1422-0067/20/9/2281/pdf-vor |
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