| article html file updated | 6 February 2020 03:47 CET | Update | https://www.mdpi.com/2071-1050/5/8/3513 |
| article html file updated | 8 May 2019 01:43 CEST | Update | - |
| article html file updated | 21 March 2019 02:59 CET | Update | - |
| article html file updated | 17 June 2015 12:21 CEST | Original file | - |
| article pdf uploaded. | 15 August 2013 09:33 CEST | Updated version of record | https://www.mdpi.com/2071-1050/5/8/3513/pdf |
| article pdf uploaded. | 14 August 2013 12:19 CEST | Version of Record | https://www.mdpi.com/2071-1050/5/8/3513/pdf-vor |
