| article html file updated | 6 February 2020 10:03 CET | Update | https://www.mdpi.com/1996-1944/7/6/4640 |
| article html file updated | 7 May 2019 12:55 CEST | Update | - |
| article html file updated | 21 March 2019 19:07 CET | Update | - |
| article html file updated | 20 August 2015 10:16 CEST | Update | - |
| article html file updated | 11 July 2014 11:01 CEST | Original file | - |
| article xml file uploaded | 11 July 2014 11:01 CEST | Original file | https://www.mdpi.com/1996-1944/7/6/4640/xml |
| article pdf uploaded. | 18 June 2014 14:06 CEST | Version of Record | https://www.mdpi.com/1996-1944/7/6/4640/pdf |
