| article html file updated | 9 February 2020 02:43 CET | Update | https://www.mdpi.com/1996-1073/11/1/171 |
| article html file updated | 29 September 2019 20:05 CEST | Update | - |
| article html file updated | 2 May 2019 02:57 CEST | Update | - |
| article html file updated | 18 April 2019 01:08 CEST | Update | - |
| article html file updated | 28 March 2019 14:45 CET | Update | - |
| article html file updated | 1 February 2018 13:49 CET | Update | - |
| article html file updated | 11 January 2018 16:35 CET | Original file | - |
| article xml uploaded. | 11 January 2018 16:34 CET | Original file | https://www.mdpi.com/1996-1073/11/1/171/xml |
| article pdf uploaded. | 11 January 2018 16:29 CET | Version of Record | https://www.mdpi.com/1996-1073/11/1/171/pdf |
