| article pdf uploaded. | 6 December 2016 12:12 CET | Version of Record | https://www.mdpi.com/1424-8220/8/9/5336/pdf |
| article html file updated | 24 November 2016 09:01 CET | Update | https://www.mdpi.com/1424-8220/8/9/5336 |
| article html file updated | 11 November 2015 10:26 CET | Update | - |
| article xml file uploaded | 11 November 2015 10:26 CET | Update | https://www.mdpi.com/1424-8220/8/9/5336/xml |
| article html file updated | 16 June 2015 04:47 CEST | Update | - |
| article html file updated | 8 July 2013 13:47 CEST | Original file | - |
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