| article html file updated | 9 February 2020 00:45 CET | Update | https://www.mdpi.com/1996-1073/11/1/6 |
| article html file updated | 29 September 2019 09:09 CEST | Update | - |
| article html file updated | 2 May 2019 07:06 CEST | Update | - |
| article html file updated | 18 April 2019 05:00 CEST | Update | - |
| article html file updated | 1 February 2018 09:18 CET | Update | - |
| article html file updated | 21 December 2017 12:30 CET | Original file | - |
| article xml uploaded. | 21 December 2017 12:28 CET | Update | https://www.mdpi.com/1996-1073/11/1/6/xml |
| article xml uploaded. | 21 December 2017 12:28 CET | Original file | - |
| article pdf uploaded. | 21 December 2017 12:28 CET | Version of Record | https://www.mdpi.com/1996-1073/11/1/6/pdf |
