| article html file updated | 17 June 2015 10:16 CEST | Update | https://www.mdpi.com/1424-8220/13/6/7680 |
| article html file updated | 19 July 2013 09:57 CEST | Original file | - |
| article xml file uploaded | 19 July 2013 09:56 CEST | Original file | https://www.mdpi.com/1424-8220/13/6/7680/xml |
| article pdf uploaded. | 24 June 2013 08:19 CEST | Updated version of record | https://www.mdpi.com/1424-8220/13/6/7680/pdf |
| article pdf uploaded. | 20 June 2013 15:22 CEST | Updated version of record | https://www.mdpi.com/1424-8220/13/6/7680/pdf-vor |
| article pdf uploaded. | 14 June 2013 14:43 CEST | Version of Record | https://www.mdpi.com/1424-8220/13/6/7680/pdf-vor |
