| article html file updated | 29 August 2025 20:40 CEST | Update | https://www.mdpi.com/2071-1050/5/6/2770 |
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| article pdf uploaded. | 24 June 2013 09:03 CEST | Updated version of record | https://www.mdpi.com/2071-1050/5/6/2770/pdf |
| article pdf uploaded. | 20 June 2013 11:25 CEST | Version of Record | https://www.mdpi.com/2071-1050/5/6/2770/pdf-vor |
