| article html file updated | 6 February 2020 16:30 CET | Update | https://www.mdpi.com/2071-1050/7/3/2885 |
| article html file updated | 6 May 2019 23:59 CEST | Update | N/A |
| article html file updated | 25 March 2019 22:46 CET | Update | N/A |
| article html file updated | 21 August 2015 08:35 CEST | Original file | N/A |
| article pdf uploaded. | 12 March 2015 10:46 CET | Updated version of record | https://www.mdpi.com/2071-1050/7/3/2885/pdf |
| article pdf uploaded. | 11 March 2015 11:21 CET | Version of Record | https://www.mdpi.com/2071-1050/7/3/2885/pdf-vor |
