| article html file updated | 20 August 2015 02:24 CEST | Update | https://www.mdpi.com/1424-8220/14/4/6409 |
| article html file updated | 25 July 2014 12:19 CEST | Update | - |
| article xml file uploaded | 25 July 2014 12:19 CEST | Update | https://www.mdpi.com/1424-8220/14/4/6409/xml |
| article html file updated | 20 May 2014 14:01 CEST | Original file | - |
| article xml file uploaded | 20 May 2014 14:01 CEST | Original file | - |
| article pdf uploaded. | 8 April 2014 11:11 CEST | Version of Record | https://www.mdpi.com/1424-8220/14/4/6409/pdf |
