| article html file updated | 12 August 2026 22:32 CEST | Update | https://www.mdpi.com/2071-1050/6/2/872 |
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| article html file updated | 19 August 2015 21:19 CEST | Original file | N/A |
| article pdf uploaded. | 21 February 2014 12:05 CET | Version of Record | https://www.mdpi.com/2071-1050/6/2/872/pdf |
