| article html file updated | 8 February 2020 00:01 CET | Update | https://www.mdpi.com/2071-1050/9/2/323 |
| article html file updated | 23 September 2019 11:26 CEST | Update | - |
| article html file updated | 4 May 2019 09:59 CEST | Update | - |
| article html file updated | 1 March 2017 10:45 CET | Update | - |
| article html file updated | 22 February 2017 12:20 CET | Original file | - |
| article xml uploaded. | 22 February 2017 12:19 CET | Original file | https://www.mdpi.com/2071-1050/9/2/323/xml |
| article pdf uploaded. | 22 February 2017 12:19 CET | Version of Record | https://www.mdpi.com/2071-1050/9/2/323/pdf |
