| article html file updated | 29 August 2025 22:38 CEST | Update | https://www.mdpi.com/2072-6643/8/2/66 |
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| article pdf uploaded. | 28 January 2016 15:02 CET | Updated version of record | https://www.mdpi.com/2072-6643/8/2/66/pdf |
| article xml uploaded. | 28 January 2016 15:02 CET | Update | https://www.mdpi.com/2072-6643/8/2/66/xml |
| article pdf uploaded. | 26 January 2016 10:57 CET | Version of Record | https://www.mdpi.com/2072-6643/8/2/66/pdf-vor |
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