| article html file updated | 30 August 2025 07:38 CEST | Update | https://www.mdpi.com/2077-1312/6/4/113 |
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| article pdf uploaded. | 10 October 2018 10:36 CEST | Version of Record | https://www.mdpi.com/2077-1312/6/4/113/pdf |
| article xml uploaded. | 10 October 2018 10:36 CEST | Update | https://www.mdpi.com/2077-1312/6/4/113/xml |
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