| article html file updated | 8 February 2020 23:32 CET | Update | https://www.mdpi.com/2071-1050/9/12/2273 |
| article html file updated | 29 September 2019 02:00 CEST | Update | - |
| article html file updated | 2 May 2019 09:47 CEST | Update | - |
| article html file updated | 18 April 2019 07:27 CEST | Update | - |
| article html file updated | 2 January 2018 18:34 CET | Update | - |
| article html file updated | 8 December 2017 11:04 CET | Original file | - |
| article xml uploaded. | 8 December 2017 11:03 CET | Original file | https://www.mdpi.com/2071-1050/9/12/2273/xml |
| article pdf uploaded. | 8 December 2017 11:03 CET | Version of Record | https://www.mdpi.com/2071-1050/9/12/2273/pdf |
