| article html file updated | 6 February 2020 11:02 CET | Update | https://www.mdpi.com/1996-1073/7/8/4813 |
| article html file updated | 7 May 2019 10:58 CEST | Update | - |
| article html file updated | 21 March 2019 21:50 CET | Update | - |
| article html file updated | 20 August 2015 13:52 CEST | Update | - |
| article html file updated | 11 September 2014 12:14 CEST | Original file | - |
| article xml file uploaded | 11 September 2014 12:14 CEST | Original file | https://www.mdpi.com/1996-1073/7/8/4813/xml |
| article pdf uploaded. | 28 July 2014 10:25 CEST | Version of Record | https://www.mdpi.com/1996-1073/7/8/4813/pdf |
