| article html file updated | 7 February 2020 22:23 CET | Update | https://www.mdpi.com/2071-1050/9/2/191 |
| article html file updated | 4 May 2019 13:16 CEST | Update | N/A |
| article html file updated | 1 March 2017 10:26 CET | Update | N/A |
| article html file updated | 13 February 2017 09:54 CET | Original file | N/A |
| article xml uploaded. | 13 February 2017 09:53 CET | Original file | https://www.mdpi.com/2071-1050/9/2/191/xml |
| article pdf uploaded. | 13 February 2017 09:53 CET | Updated version of record | https://www.mdpi.com/2071-1050/9/2/191/pdf |
| article pdf uploaded. | 28 January 2017 06:03 CET | Version of Record | https://www.mdpi.com/2071-1050/9/2/191/pdf-vor |
