| article html file updated | 6 February 2020 11:30 CET | Update | https://www.mdpi.com/1996-1073/7/8/5291 |
| article html file updated | 7 May 2019 09:38 CEST | Update | - |
| article html file updated | 21 March 2019 23:11 CET | Update | - |
| article html file updated | 20 August 2015 15:35 CEST | Update | - |
| article html file updated | 5 September 2014 10:33 CEST | Original file | - |
| article xml file uploaded | 5 September 2014 10:33 CEST | Original file | https://www.mdpi.com/1996-1073/7/8/5291/xml |
| article pdf uploaded. | 15 August 2014 14:40 CEST | Version of Record | https://www.mdpi.com/1996-1073/7/8/5291/pdf |
