| article html file updated | 7 February 2020 20:45 CET | Update | https://www.mdpi.com/2071-1050/9/1/62 |
| article html file updated | 22 September 2019 17:43 CEST | Update | - |
| article html file updated | 4 May 2019 16:51 CEST | Update | - |
| article html file updated | 7 February 2017 09:57 CET | Update | - |
| article html file updated | 4 January 2017 10:05 CET | Original file | - |
| article xml uploaded. | 4 January 2017 10:03 CET | Update | https://www.mdpi.com/2071-1050/9/1/62/xml |
| article pdf uploaded. | 4 January 2017 10:03 CET | Version of Record | https://www.mdpi.com/2071-1050/9/1/62/pdf |
