| article html file updated | 16 June 2015 10:35 CEST | Update | https://www.mdpi.com/1424-8220/10/7/6488 |
| article html file updated | 28 April 2014 11:12 CEST | Update | - |
| article xml file uploaded | 28 April 2014 11:12 CEST | Original file | https://www.mdpi.com/1424-8220/10/7/6488/xml |
| article html file updated | 6 February 2013 18:00 CET | Update | - |
| article html file updated | 5 February 2013 22:06 CET | Update | - |
| article html file updated | 28 January 2013 19:38 CET | Update | - |
| article html file updated | 25 January 2013 22:49 CET | Update | - |
| article html file updated | 22 January 2013 01:45 CET | Update | - |
| article html file updated | 18 January 2013 07:52 CET | Original file | - |
