| article html file updated | 17 June 2015 07:58 CEST | Update | https://www.mdpi.com/1424-8220/13/4/4138 |
| article html file updated | 5 June 2013 11:30 CEST | Original file | - |
| article xml file uploaded | 5 June 2013 11:30 CEST | Original file | https://www.mdpi.com/1424-8220/13/4/4138/xml |
| article pdf uploaded. | 27 March 2013 12:23 CET | Version of Record | https://www.mdpi.com/1424-8220/13/4/4138/pdf |
