| article html file updated | 29 August 2025 20:56 CEST | Update | https://www.mdpi.com/1999-4915/6/2/489 |
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| article xml file uploaded | 18 March 2014 10:00 CET | Original file | https://www.mdpi.com/1999-4915/6/2/489/xml |
| article pdf uploaded. | 29 January 2014 14:34 CET | Version of Record | https://www.mdpi.com/1999-4915/6/2/489/pdf |
