| article html file updated | 16 June 2015 23:17 CEST | Update | https://www.mdpi.com/1424-8220/12/4/4918 |
| article html file updated | 14 August 2014 12:05 CEST | Update | - |
| article xml file uploaded | 14 August 2014 12:05 CEST | Original file | https://www.mdpi.com/1424-8220/12/4/4918/xml |
| article html file updated | 7 February 2013 11:49 CET | Update | - |
| article html file updated | 7 February 2013 01:49 CET | Update | - |
| article html file updated | 6 February 2013 07:14 CET | Update | - |
| article html file updated | 29 January 2013 02:52 CET | Update | - |
| article html file updated | 26 January 2013 09:48 CET | Update | - |
| article html file updated | 23 January 2013 15:34 CET | Original file | - |
