| article html file updated | 16 June 2015 13:25 CEST | Update | https://www.mdpi.com/1999-4923/3/1/12 |
| article html file updated | 3 December 2013 08:21 CET | Update | - |
| article xml file uploaded | 3 December 2013 08:20 CET | Original file | https://www.mdpi.com/1999-4923/3/1/12/xml |
| article html file updated | 6 February 2013 19:23 CET | Update | - |
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| article html file updated | 22 January 2013 07:59 CET | Original file | - |
