| article html file updated | 30 August 2025 14:38 CEST | Update | https://www.mdpi.com/2226-4310/6/5/50 |
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| article pdf uploaded. | 2 May 2019 13:18 CEST | Version of Record | https://www.mdpi.com/2226-4310/6/5/50/pdf |
| article xml uploaded. | 2 May 2019 13:18 CEST | Update | https://www.mdpi.com/2226-4310/6/5/50/xml |
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