| article html file updated | 17 June 2015 08:11 CEST | Update | https://www.mdpi.com/1424-8220/13/4/4527 |
| article html file updated | 5 June 2013 11:43 CEST | Original file | - |
| article xml file uploaded | 5 June 2013 11:43 CEST | Original file | https://www.mdpi.com/1424-8220/13/4/4527/xml |
| article pdf uploaded. | 16 April 2013 16:23 CEST | Updated version of record | https://www.mdpi.com/1424-8220/13/4/4527/pdf |
| article pdf uploaded. | 8 April 2013 09:23 CEST | Version of Record | https://www.mdpi.com/1424-8220/13/4/4527/pdf-vor |
