| article html file updated | 5 June 2014 11:02 CEST | Update | https://www.mdpi.com/1424-8220/8/2/1222 |
| article html file updated | 5 June 2014 11:01 CEST | Update | N/A |
| article html file updated | 21 May 2013 08:49 CEST | Original file | N/A |
| article xml file uploaded | 21 May 2013 08:48 CEST | Original file | https://www.mdpi.com/1424-8220/8/2/1222/xml |
