| article html file updated | 20 August 2015 02:34 CEST | Update | https://www.mdpi.com/1424-8220/14/4/6633 |
| article html file updated | 14 August 2014 12:06 CEST | Update | - |
| article xml file uploaded | 14 August 2014 12:06 CEST | Update | https://www.mdpi.com/1424-8220/14/4/6633/xml |
| article html file updated | 25 July 2014 12:20 CEST | Update | - |
| article xml file uploaded | 25 July 2014 12:20 CEST | Update | - |
| article html file updated | 20 May 2014 13:51 CEST | Original file | - |
| article xml file uploaded | 20 May 2014 13:50 CEST | Original file | - |
| article pdf uploaded. | 14 April 2014 15:08 CEST | Updated version of record | https://www.mdpi.com/1424-8220/14/4/6633/pdf |
| article pdf uploaded. | 11 April 2014 17:27 CEST | Updated version of record | https://www.mdpi.com/1424-8220/14/4/6633/pdf-vor |
| article pdf uploaded. | 9 April 2014 13:58 CEST | Version of Record | https://www.mdpi.com/1424-8220/14/4/6633/pdf-vor |
