| article html file updated | 16 June 2015 18:25 CEST | Update | https://www.mdpi.com/1424-8220/11/9/8888 |
| 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/1424-8220/11/9/8888/xml |
| article html file updated | 6 February 2013 22:41 CET | Update | - |
| article html file updated | 6 February 2013 02:27 CET | Update | - |
| article html file updated | 28 January 2013 23:48 CET | Update | - |
| article html file updated | 26 January 2013 05:06 CET | Update | - |
| article html file updated | 22 January 2013 22:23 CET | Original file | - |
