| article html file updated | 9 February 2020 13:03 CET | Update | https://www.mdpi.com/1996-1073/11/4/871 |
| article html file updated | 2 October 2019 10:12 CEST | Update | - |
| article html file updated | 1 May 2019 04:59 CEST | Update | - |
| article html file updated | 17 April 2019 05:13 CEST | Update | - |
| article html file updated | 29 March 2019 13:56 CET | Update | - |
| article html file updated | 1 May 2018 09:14 CEST | Update | - |
| article html file updated | 9 April 2018 12:14 CEST | Original file | - |
| article xml uploaded. | 9 April 2018 12:12 CEST | Update | https://www.mdpi.com/1996-1073/11/4/871/xml |
| article pdf uploaded. | 9 April 2018 12:12 CEST | Version of Record | https://www.mdpi.com/1996-1073/11/4/871/pdf |
