| article html file updated | 16 June 2015 20:08 CEST | Update | https://www.mdpi.com/2072-6694/3/4/4191 |
| article html file updated | 5 September 2013 12:06 CEST | Update | - |
| article xml file uploaded | 5 September 2013 12:06 CEST | Update | https://www.mdpi.com/2072-6694/3/4/4191/xml |
| article html file updated | 4 September 2013 15:17 CEST | Update | - |
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| article html file updated | 28 August 2013 10:31 CEST | Update | - |
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| article html file updated | 6 February 2013 23:36 CET | Update | - |
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| article html file updated | 26 January 2013 06:24 CET | Update | - |
| article html file updated | 23 January 2013 02:45 CET | Original file | - |
