| article html file updated | 6 February 2020 13:53 CET | Update | https://www.mdpi.com/2071-1050/6/12/8452 |
| article html file updated | 20 September 2019 15:11 CEST | Update | - |
| 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. | 28 November 2014 08:11 CET | Updated version of record | https://www.mdpi.com/2071-1050/6/12/8452/pdf |
| article pdf uploaded. | 25 November 2014 11:09 CET | Version of Record | https://www.mdpi.com/2071-1050/6/12/8452/pdf-vor |
