| article html file updated | 16 June 2015 17:21 CEST | Update | https://www.mdpi.com/1999-4893/4/2/131 |
| article html file updated | 14 August 2014 11:40 CEST | Update | - |
| article xml file uploaded | 14 August 2014 11:40 CEST | Update | https://www.mdpi.com/1999-4893/4/2/131/xml |
| article html file updated | 14 August 2014 11:20 CEST | Update | - |
| article xml file uploaded | 14 August 2014 11:20 CEST | Original file | - |
| article html file updated | 6 February 2013 21:54 CET | Update | - |
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| article html file updated | 28 January 2013 23:08 CET | Update | - |
| article html file updated | 26 January 2013 03:52 CET | Update | - |
| article html file updated | 22 January 2013 19:24 CET | Original file | - |
