| article html file updated | 28 September 2025 19:15 CEST | Update | https://www.mdpi.com/2071-1050/5/2/496 |
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| article pdf uploaded. | 7 February 2013 15:32 CET | Updated version of record | https://www.mdpi.com/2071-1050/5/2/496/pdf |
| article pdf uploaded. | 1 February 2013 11:46 CET | Version of Record | https://www.mdpi.com/2071-1050/5/2/496/pdf-vor |
