| article html file updated | 6 February 2020 20:32 CET | Update | https://www.mdpi.com/1996-1073/8/7/6995 |
| article html file updated | 6 May 2019 16:02 CEST | Update | - |
| article html file updated | 26 March 2019 06:19 CET | Update | - |
| article html file updated | 21 August 2015 14:41 CEST | Update | - |
| article html file updated | 10 August 2015 12:31 CEST | Original file | - |
| article xml file uploaded | 10 August 2015 12:31 CEST | Original file | https://www.mdpi.com/1996-1073/8/7/6995/xml |
| article pdf uploaded. | 10 July 2015 14:14 CEST | Version of Record | https://www.mdpi.com/1996-1073/8/7/6995/pdf |
