| article html file updated | 9 February 2020 06:59 CET | Update | https://www.mdpi.com/1996-1073/11/2/447 |
| article html file updated | 30 September 2019 21:24 CEST | Update | - |
| article html file updated | 1 May 2019 17:41 CEST | Update | - |
| article html file updated | 17 April 2019 17:01 CEST | Update | - |
| article html file updated | 29 March 2019 00:04 CET | Update | - |
| article html file updated | 14 March 2018 16:27 CET | Update | - |
| article html file updated | 18 February 2018 03:19 CET | Original file | - |
| article xml uploaded. | 18 February 2018 03:17 CET | Update | https://www.mdpi.com/1996-1073/11/2/447/xml |
| article xml uploaded. | 18 February 2018 03:17 CET | Original file | - |
| article pdf uploaded. | 18 February 2018 03:17 CET | Version of Record | https://www.mdpi.com/1996-1073/11/2/447/pdf |
