| article html file updated | 31 August 2025 03:57 CEST | Update | https://www.mdpi.com/2306-7381/6/4/89 |
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| article pdf uploaded. | 2 November 2019 10:27 CET | Version of Record | https://www.mdpi.com/2306-7381/6/4/89/pdf |
| article xml uploaded. | 2 November 2019 10:27 CET | Update | https://www.mdpi.com/2306-7381/6/4/89/xml |
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