| article html file updated | 6 February 2020 10:53 CET | Update | https://www.mdpi.com/2071-1050/6/7/4525 |
| article html file updated | 20 September 2019 10:43 CEST | Update | - |
| article html file updated | 7 May 2019 11:16 CEST | Update | - |
| article html file updated | 21 March 2019 21:23 CET | Update | - |
| article html file updated | 20 August 2015 13:21 CEST | Original file | - |
| article pdf uploaded. | 22 July 2014 09:35 CEST | Version of Record | https://www.mdpi.com/2071-1050/6/7/4525/pdf |
