| article html file updated | 30 August 2025 23:48 CEST | Update | https://www.mdpi.com/2218-6581/8/3/71 |
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| article pdf uploaded. | 12 August 2019 06:14 CEST | Version of Record | https://www.mdpi.com/2218-6581/8/3/71/pdf |
| article xml uploaded. | 12 August 2019 06:14 CEST | Update | https://www.mdpi.com/2218-6581/8/3/71/xml |
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