| article html file updated | 6 February 2020 09:54 CET | Update | https://www.mdpi.com/1996-1944/7/6/4431 |
| article html file updated | 7 May 2019 13:16 CEST | Update | - |
| article html file updated | 21 March 2019 18:40 CET | Update | - |
| article html file updated | 20 August 2015 09:38 CEST | Update | - |
| article html file updated | 11 July 2014 11:00 CEST | Original file | - |
| article xml file uploaded | 11 July 2014 11:00 CEST | Original file | https://www.mdpi.com/1996-1944/7/6/4431/xml |
| article pdf uploaded. | 12 June 2014 09:11 CEST | Version of Record | https://www.mdpi.com/1996-1944/7/6/4431/pdf |
