| article html file updated | 17 June 2015 09:10 CEST | Update | https://www.mdpi.com/1424-8220/13/5/6089 |
| article html file updated | 24 June 2013 12:00 CEST | Original file | - |
| article xml file uploaded | 24 June 2013 12:00 CEST | Original file | https://www.mdpi.com/1424-8220/13/5/6089/xml |
| article pdf uploaded. | 22 May 2013 18:14 CEST | Updated version of record | https://www.mdpi.com/1424-8220/13/5/6089/pdf |
| article pdf uploaded. | 14 May 2013 16:02 CEST | Updated version of record | https://www.mdpi.com/1424-8220/13/5/6089/pdf-vor |
| article pdf uploaded. | 10 May 2013 14:43 CEST | Version of Record | https://www.mdpi.com/1424-8220/13/5/6089/pdf-vor |
