| article html file updated | 16 June 2015 20:34 CEST | Update | https://www.mdpi.com/1424-8247/4/12/1578 |
| article html file updated | 14 August 2014 12:04 CEST | Update | - |
| article xml file uploaded | 14 August 2014 12:04 CEST | Update | https://www.mdpi.com/1424-8247/4/12/1578/xml |
| article html file updated | 18 June 2014 04:08 CEST | Update | - |
| article xml file uploaded | 18 June 2014 04:08 CEST | Original file | - |
| article html file updated | 6 February 2013 23:51 CET | Update | - |
| article html file updated | 6 February 2013 05:01 CET | Update | - |
| article html file updated | 29 January 2013 00:55 CET | Update | - |
| article html file updated | 26 January 2013 06:52 CET | Update | - |
| article html file updated | 23 January 2013 05:25 CET | Original file | - |
