| article html file updated | 7 February 2020 22:48 CET | Update | https://www.mdpi.com/2071-1050/9/2/151 |
| article html file updated | 23 September 2019 04:43 CEST | Update | - |
| article html file updated | 4 May 2019 12:25 CEST | Update | - |
| article html file updated | 1 March 2017 10:20 CET | Update | - |
| article html file updated | 7 February 2017 12:50 CET | Original file | - |
| article xml uploaded. | 7 February 2017 12:49 CET | Original file | https://www.mdpi.com/2071-1050/9/2/151/xml |
| article pdf uploaded. | 7 February 2017 12:49 CET | Version of Record | https://www.mdpi.com/2071-1050/9/2/151/pdf |
