| article html file updated | 12 August 2026 17:50 CEST | Update | https://www.mdpi.com/2072-6643/5/2/543 |
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| article pdf uploaded. | 18 February 2013 12:33 CET | Updated version of record | https://www.mdpi.com/2072-6643/5/2/543/pdf |
| article pdf uploaded. | 15 February 2013 09:06 CET | Version of Record | https://www.mdpi.com/2072-6643/5/2/543/pdf-vor |
