| article html file updated | 16 June 2015 04:32 CEST | Update | https://www.mdpi.com/1424-8220/8/7/4081 |
| article html file updated | 1 July 2013 11:18 CEST | Original file | N/A |
| article xml file uploaded | 1 July 2013 11:15 CEST | Original file | https://www.mdpi.com/1424-8220/8/7/4081/xml |
