| article html file updated | 6 February 2020 05:06 CET | Update | https://www.mdpi.com/2071-1050/5/10/4502 |
| article html file updated | 7 May 2019 22:55 CEST | Update | - |
| article html file updated | 21 March 2019 06:31 CET | Update | - |
| article html file updated | 17 June 2015 14:12 CEST | Original file | - |
| article supplementary file uploaded. | 15 January 2014 14:34 CET | - | https://www.mdpi.com/2071-1050/5/10/4502#supplementary |
| article pdf uploaded. | 23 October 2013 13:59 CEST | Version of Record | https://www.mdpi.com/2071-1050/5/10/4502/pdf |
