| article html file updated | 6 February 2020 05:11 CET | Update | https://www.mdpi.com/1999-4915/5/11/2624 |
| article html file updated | 7 May 2019 22:47 CEST | Update | - |
| article html file updated | 21 March 2019 06:44 CET | Update | - |
| article html file updated | 17 June 2015 14:19 CEST | Update | - |
| article html file updated | 7 January 2014 12:35 CET | Original file | - |
| article xml file uploaded | 7 January 2014 12:35 CET | Original file | https://www.mdpi.com/1999-4915/5/11/2624/xml |
| article pdf uploaded. | 28 October 2013 10:27 CET | Version of Record | https://www.mdpi.com/1999-4915/5/11/2624/pdf |
