| article html file updated | 29 August 2025 20:39 CEST | Update | https://www.mdpi.com/2072-666X/4/2/215 |
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| article pdf uploaded. | 5 June 2013 15:49 CEST | Updated version of record | https://www.mdpi.com/2072-666X/4/2/215/pdf |
| article pdf uploaded. | 3 June 2013 12:27 CEST | Version of Record | https://www.mdpi.com/2072-666X/4/2/215/pdf-vor |
