| article html file updated | 16 June 2015 04:20 CEST | Update | https://www.mdpi.com/1424-8220/8/6/3903 |
| article html file updated | 19 July 2013 08:40 CEST | Update | - |
| article xml file uploaded | 19 July 2013 08:40 CEST | Update | https://www.mdpi.com/1424-8220/8/6/3903/xml |
| article html file updated | 17 June 2013 10:00 CEST | Original file | - |
| article xml file uploaded | 17 June 2013 09:59 CEST | Original file | - |
