| article html file updated | 6 February 2020 10:36 CET | Update | https://www.mdpi.com/1999-4915/6/7/2673 |
| article html file updated | 29 September 2019 07:56 CEST | Update | - |
| article html file updated | 20 September 2019 10:20 CEST | Update | - |
| article html file updated | 7 May 2019 11:50 CEST | Update | - |
| article html file updated | 21 March 2019 20:33 CET | Update | - |
| article html file updated | 20 August 2015 12:21 CEST | Update | - |
| article html file updated | 29 July 2014 11:05 CEST | Original file | - |
| article xml file uploaded | 29 July 2014 11:05 CEST | Original file | https://www.mdpi.com/1999-4915/6/7/2673/xml |
| article supplementary file uploaded. | 9 July 2014 16:21 CEST | - | https://www.mdpi.com/1999-4915/6/7/2673#supplementary |
| article pdf uploaded. | 9 July 2014 16:21 CEST | Version of Record | https://www.mdpi.com/1999-4915/6/7/2673/pdf |