| article html file updated | 6 February 2020 14:17 CET | Update | https://www.mdpi.com/1996-1944/7/12/7891 |
| article html file updated | 7 May 2019 04:18 CEST | Update | - |
| article html file updated | 25 March 2019 18:57 CET | Update | - |
| article html file updated | 21 August 2015 03:44 CEST | Update | - |
| article html file updated | 23 December 2014 03:48 CET | Original file | - |
| article xml file uploaded | 23 December 2014 03:48 CET | Original file | https://www.mdpi.com/1996-1944/7/12/7891/xml |
| article pdf uploaded. | 15 December 2014 09:11 CET | Updated version of record | https://www.mdpi.com/1996-1944/7/12/7891/pdf |
| article pdf uploaded. | 9 December 2014 09:33 CET | Version of Record | https://www.mdpi.com/1996-1944/7/12/7891/pdf-vor |
