| article html file updated | 6 February 2020 14:09 CET | Update | https://www.mdpi.com/2071-1050/6/12/8876 |
| article html file updated | 7 May 2019 04:34 CEST | Update | N/A |
| article html file updated | 25 March 2019 18:43 CET | Update | N/A |
| article html file updated | 21 August 2015 03:16 CEST | Original file | N/A |
| article pdf uploaded. | 4 December 2014 08:19 CET | Updated version of record | https://www.mdpi.com/2071-1050/6/12/8876/pdf |
| article pdf uploaded. | 3 December 2014 11:41 CET | Version of Record | N/A |
