| article html file updated | 6 February 2020 10:16 CET | Update | https://www.mdpi.com/2071-1050/6/7/3993 |
| article html file updated | 7 May 2019 12:30 CEST | Update | - |
| article html file updated | 21 March 2019 19:41 CET | Update | - |
| article html file updated | 20 August 2015 11:01 CEST | Original file | - |
| article supplementary file uploaded. | 30 July 2014 13:24 CEST | - | https://www.mdpi.com/2071-1050/6/7/3993#supplementary |
| article pdf uploaded. | 26 June 2014 11:05 CEST | Version of Record | https://www.mdpi.com/2071-1050/6/7/3993/pdf |
