| article html file updated | 30 August 2025 05:50 CEST | Update | https://www.mdpi.com/2227-9067/5/8/106 |
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| article pdf uploaded. | 6 August 2018 11:34 CEST | Version of Record | https://www.mdpi.com/2227-9067/5/8/106/pdf |
| article xml uploaded. | 6 August 2018 11:34 CEST | Update | https://www.mdpi.com/2227-9067/5/8/106/xml |
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