| article html file updated | 20 August 2015 03:52 CEST | Update | https://www.mdpi.com/1424-8220/14/4/6998 |
| article html file updated | 25 July 2014 12:23 CEST | Update | - |
| article xml file uploaded | 25 July 2014 12:23 CEST | Update | https://www.mdpi.com/1424-8220/14/4/6998/xml |
| article html file updated | 20 May 2014 13:57 CEST | Original file | - |
| article xml file uploaded | 20 May 2014 13:57 CEST | Original file | - |
| article pdf uploaded. | 21 April 2014 10:12 CEST | Version of Record | https://www.mdpi.com/1424-8220/14/4/6998/pdf |
