| article html file updated | 8 February 2020 07:27 CET | Update | https://www.mdpi.com/2071-1050/9/6/950 |
| article html file updated | 25 September 2019 04:07 CEST | Update | - |
| article html file updated | 3 May 2019 19:01 CEST | Update | - |
| article html file updated | 28 June 2017 14:40 CEST | Update | - |
| article html file updated | 4 June 2017 13:04 CEST | Original file | - |
| article xml uploaded. | 4 June 2017 13:03 CEST | Original file | https://www.mdpi.com/2071-1050/9/6/950/xml |
| article pdf uploaded. | 4 June 2017 13:03 CEST | Version of Record | https://www.mdpi.com/2071-1050/9/6/950/pdf |
