| article html file updated | 8 February 2020 20:00 CET | Update | https://www.mdpi.com/2071-1050/9/11/1903 |
| article html file updated | 28 September 2019 03:39 CEST | Update | - |
| article html file updated | 2 May 2019 17:44 CEST | Update | - |
| article html file updated | 30 November 2017 13:40 CET | Update | - |
| article html file updated | 1 November 2017 05:46 CET | Original file | - |
| article xml uploaded. | 1 November 2017 03:14 CET | Original file | https://www.mdpi.com/2071-1050/9/11/1903/xml |
| article pdf uploaded. | 1 November 2017 03:14 CET | Version of Record | https://www.mdpi.com/2071-1050/9/11/1903/pdf |
