| article html file updated | 12 August 2026 21:08 CEST | Update | https://www.mdpi.com/1999-4915/5/11/2881 |
| article html file updated | 6 February 2020 05:43 CET | Update | N/A |
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| article xml file uploaded | 7 January 2014 12:35 CET | Original file | https://www.mdpi.com/1999-4915/5/11/2881/xml |
| article pdf uploaded. | 25 November 2013 09:43 CET | Updated version of record | https://www.mdpi.com/1999-4915/5/11/2881/pdf |
| article pdf uploaded. | 22 November 2013 12:44 CET | Version of Record | https://www.mdpi.com/1999-4915/5/11/2881/pdf-vor |
