| article html file updated | 29 August 2025 21:18 CEST | Update | https://www.mdpi.com/1999-5903/6/4/612 |
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| article xml file uploaded | 10 November 2014 07:32 CET | Original file | https://www.mdpi.com/1999-5903/6/4/612/xml |
| article pdf uploaded. | 24 October 2014 17:04 CEST | Version of Record | https://www.mdpi.com/1999-5903/6/4/612/pdf |
