| article html file updated | 6 February 2020 07:51 CET | Update | https://www.mdpi.com/2071-1050/6/3/1283 |
| article html file updated | 7 May 2019 17:26 CEST | Update | - |
| article html file updated | 21 March 2019 13:44 CET | Update | - |
| article html file updated | 19 August 2015 23:23 CEST | Original file | - |
| article pdf uploaded. | 24 March 2014 18:12 CET | Updated version of record | https://www.mdpi.com/2071-1050/6/3/1283/pdf |
| article pdf uploaded. | 12 March 2014 08:54 CET | Version of Record | https://www.mdpi.com/2071-1050/6/3/1283/pdf-vor |
