| article html file updated | 6 February 2020 10:41 CET | Update | https://www.mdpi.com/1999-4923/6/3/416 |
| article html file updated | 7 May 2019 11:40 CEST | Update | - |
| article html file updated | 21 March 2019 20:49 CET | Update | - |
| article html file updated | 20 August 2015 12:43 CEST | Update | - |
| article html file updated | 9 October 2014 11:24 CEST | Original file | - |
| article xml file uploaded | 9 October 2014 11:24 CEST | Original file | https://www.mdpi.com/1999-4923/6/3/416/xml |
| article pdf uploaded. | 14 July 2014 15:29 CEST | Version of Record | https://www.mdpi.com/1999-4923/6/3/416/pdf |
