| article html file updated | 31 August 2025 06:23 CEST | Update | https://www.mdpi.com/2227-9091/7/4/122 |
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| article pdf uploaded. | 12 December 2019 11:41 CET | Version of Record | https://www.mdpi.com/2227-9091/7/4/122/pdf |
| article xml uploaded. | 12 December 2019 11:41 CET | Update | https://www.mdpi.com/2227-9091/7/4/122/xml |
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