| article html file updated | 6 February 2020 13:53 CET | Update | https://www.mdpi.com/2071-1050/6/12/8415 |
| article html file updated | 7 May 2019 05:03 CEST | Update | - |
| article html file updated | 25 March 2019 18:12 CET | Update | - |
| article html file updated | 21 August 2015 02:31 CEST | Original file | - |
| article pdf uploaded. | 25 November 2014 11:00 CET | Version of Record | https://www.mdpi.com/2071-1050/6/12/8415/pdf |
