| article html file updated | 6 February 2020 12:20 CET | Update | https://www.mdpi.com/1999-4907/5/9/2307 |
| article html file updated | 7 May 2019 08:06 CEST | Update | - |
| article html file updated | 22 March 2019 01:10 CET | Update | - |
| article html file updated | 20 August 2015 20:03 CEST | Update | - |
| article html file updated | 16 October 2014 10:43 CEST | Original file | - |
| article xml file uploaded | 16 October 2014 10:43 CEST | Original file | https://www.mdpi.com/1999-4907/5/9/2307/xml |
| article pdf uploaded. | 19 September 2014 13:59 CEST | Version of Record | https://www.mdpi.com/1999-4907/5/9/2307/pdf |
