| article html file updated | 6 February 2020 22:43 CET | Update | https://www.mdpi.com/1999-4907/6/9/3177 |
| article html file updated | 6 May 2019 11:31 CEST | Update | - |
| article html file updated | 26 March 2019 10:34 CET | Update | - |
| article html file updated | 23 October 2015 12:48 CEST | Update | - |
| article xml file uploaded | 23 October 2015 12:48 CEST | Update | https://www.mdpi.com/1999-4907/6/9/3177/xml |
| article html file updated | 12 October 2015 11:48 CEST | Original file | - |
| article xml file uploaded | 12 October 2015 11:48 CEST | Original file | - |
| article pdf uploaded. | 24 September 2015 14:56 CEST | Updated version of record | https://www.mdpi.com/1999-4907/6/9/3177/pdf |
| article pdf uploaded. | 11 September 2015 15:25 CEST | Version of Record | https://www.mdpi.com/1999-4907/6/9/3177/pdf-vor |
