| article html file updated | 17 June 2015 09:12 CEST | Update | https://www.mdpi.com/1424-8220/13/5/6254 |
| article html file updated | 24 June 2013 12:03 CEST | Original file | N/A |
| article xml file uploaded | 24 June 2013 12:03 CEST | Original file | https://www.mdpi.com/1424-8220/13/5/6254/xml |
| article pdf uploaded. | 21 May 2013 19:38 CEST | Updated version of record | https://www.mdpi.com/1424-8220/13/5/6254/pdf |
| article pdf uploaded. | 15 May 2013 16:57 CEST | Updated version of record | https://www.mdpi.com/1424-8220/13/5/6254/pdf-vor |
| article pdf uploaded. | 13 May 2013 10:02 CEST | Version of Record | https://www.mdpi.com/1424-8220/13/5/6254/pdf-vor |
