| article html file updated | 16 June 2015 14:29 CEST | Update | https://www.mdpi.com/1424-8247/4/3/457 |
| article html file updated | 12 June 2014 12:30 CEST | Update | - |
| article xml file uploaded | 12 June 2014 12:30 CEST | Original file | https://www.mdpi.com/1424-8247/4/3/457/xml |
| article html file updated | 6 February 2013 20:03 CET | Update | - |
| article html file updated | 5 February 2013 23:56 CET | Update | - |
| article html file updated | 28 January 2013 21:25 CET | Update | - |
| article html file updated | 26 January 2013 01:17 CET | Update | - |
| article html file updated | 22 January 2013 11:25 CET | Original file | - |
