| article html file updated | 17 June 2015 07:55 CEST | Update | https://www.mdpi.com/1424-8220/13/4/4067 |
| article html file updated | 5 June 2013 11:29 CEST | Original file | - |
| article xml file uploaded | 5 June 2013 11:29 CEST | Original file | https://www.mdpi.com/1424-8220/13/4/4067/xml |
| article pdf uploaded. | 28 March 2013 18:07 CET | Updated version of record | https://www.mdpi.com/1424-8220/13/4/4067/pdf |
| article pdf uploaded. | 26 March 2013 15:35 CET | Version of Record | https://www.mdpi.com/1424-8220/13/4/4067/pdf-vor |
