| article html file updated | 16 June 2015 17:49 CEST | Update | https://www.mdpi.com/1424-8220/11/8/8018 |
| article html file updated | 14 August 2014 12:05 CEST | Update | - |
| article xml file uploaded | 14 August 2014 12:05 CEST | Original file | https://www.mdpi.com/1424-8220/11/8/8018/xml |
| article html file updated | 6 February 2013 22:14 CET | Update | - |
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| article html file updated | 28 January 2013 23:24 CET | Update | - |
| article html file updated | 26 January 2013 04:23 CET | Update | - |
| article html file updated | 22 January 2013 20:39 CET | Original file | - |
