| article html file updated | 6 February 2020 22:19 CET | Update | https://www.mdpi.com/1999-4907/6/9/3060 |
| article html file updated | 6 May 2019 12:22 CEST | Update | - |
| article html file updated | 26 March 2019 09:48 CET | Update | - |
| article html file updated | 12 October 2015 11:48 CEST | Update | - |
| article xml file uploaded | 12 October 2015 11:48 CEST | Update | https://www.mdpi.com/1999-4907/6/9/3060/xml |
| article html file updated | 3 September 2015 07:44 CEST | Original file | - |
| article xml file uploaded | 3 September 2015 07:44 CEST | Original file | - |
| article pdf uploaded. | 31 August 2015 14:12 CEST | Version of Record | https://www.mdpi.com/1999-4907/6/9/3060/pdf |
