| article html file updated | 7 February 2020 23:45 CET | Update | https://www.mdpi.com/2071-1050/9/2/306 |
| article html file updated | 23 September 2019 10:00 CEST | Update | - |
| article html file updated | 4 May 2019 10:32 CEST | Update | - |
| article html file updated | 1 March 2017 10:44 CET | Update | - |
| article html file updated | 19 February 2017 10:51 CET | Original file | - |
| article xml uploaded. | 19 February 2017 10:49 CET | Update | https://www.mdpi.com/2071-1050/9/2/306/xml |
| article xml uploaded. | 19 February 2017 10:49 CET | Original file | - |
| article pdf uploaded. | 19 February 2017 10:49 CET | Version of Record | https://www.mdpi.com/2071-1050/9/2/306/pdf |
