| article html file updated | 6 February 2020 05:02 CET | Update | https://www.mdpi.com/1999-4915/5/10/2561 |
| article html file updated | 7 May 2019 23:02 CEST | Update | - |
| article html file updated | 21 March 2019 06:20 CET | Update | - |
| article html file updated | 17 June 2015 14:07 CEST | Update | - |
| article html file updated | 1 November 2013 13:56 CET | Original file | - |
| article xml file uploaded | 1 November 2013 13:56 CET | Original file | https://www.mdpi.com/1999-4915/5/10/2561/xml |
| article pdf uploaded. | 23 October 2013 16:21 CEST | Updated version of record | https://www.mdpi.com/1999-4915/5/10/2561/pdf |
| article pdf uploaded. | 22 October 2013 09:27 CEST | Version of Record | https://www.mdpi.com/1999-4915/5/10/2561/pdf-vor |
