| article html file updated | 16 June 2015 19:10 CEST | Update | https://www.mdpi.com/2073-4425/2/4/689 |
| article html file updated | 18 March 2014 09:34 CET | Update | - |
| article xml file uploaded | 18 March 2014 09:34 CET | Original file | https://www.mdpi.com/2073-4425/2/4/689/xml |
| article html file updated | 6 February 2013 23:01 CET | Update | - |
| article html file updated | 6 February 2013 02:48 CET | Update | - |
| article html file updated | 29 January 2013 00:07 CET | Update | - |
| article html file updated | 26 January 2013 05:33 CET | Update | - |
| article html file updated | 22 January 2013 23:54 CET | Original file | - |
