| article html file updated | 5 February 2020 17:19 CET | Update | https://www.mdpi.com/1660-3397/9/6/922 |
| article html file updated | 9 May 2019 00:45 CEST | Update | - |
| article html file updated | 20 March 2019 07:38 CET | Update | - |
| article html file updated | 16 June 2015 16:15 CEST | Update | - |
| article html file updated | 14 August 2014 12:07 CEST | Update | - |
| article xml file uploaded | 14 August 2014 12:07 CEST | Update | https://www.mdpi.com/1660-3397/9/6/922/xml |
| article html file updated | 14 August 2014 12:04 CEST | Update | - |
| article xml file uploaded | 14 August 2014 12:04 CEST | Original file | - |
| article html file updated | 6 February 2013 21:10 CET | Update | - |
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| article html file updated | 28 January 2013 22:27 CET | Update | - |
| article html file updated | 26 January 2013 02:42 CET | Update | - |
| article html file updated | 22 January 2013 16:28 CET | Original file | - |
