| article html file updated | 7 February 2020 17:50 CET | Update | https://www.mdpi.com/1996-1073/9/11/939 |
| article html file updated | 4 May 2019 22:51 CEST | Update | N/A |
| article html file updated | 30 November 2016 05:59 CET | Update | N/A |
| article html file updated | 10 November 2016 12:50 CET | Original file | N/A |
| article xml uploaded. | 10 November 2016 12:48 CET | Update | https://www.mdpi.com/1996-1073/9/11/939/xml |
| article xml uploaded. | 10 November 2016 12:48 CET | Update | N/A |
| article xml uploaded. | 10 November 2016 12:48 CET | Original file | N/A |
| article pdf uploaded. | 10 November 2016 12:48 CET | Version of Record | https://www.mdpi.com/1996-1073/9/11/939/pdf |
