| article html file updated | 6 February 2020 05:27 CET | Update | https://www.mdpi.com/1424-8247/6/11/1407 |
| article html file updated | 7 May 2019 22:19 CEST | Update | - |
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| article xml file uploaded | 3 December 2013 08:20 CET | Original file | https://www.mdpi.com/1424-8247/6/11/1407/xml |
| article pdf uploaded. | 11 November 2013 09:39 CET | Version of Record | https://www.mdpi.com/1424-8247/6/11/1407/pdf |
