| article html file updated | 8 February 2020 09:59 CET | Update | https://www.mdpi.com/1996-1073/10/7/909 |
| article html file updated | 25 September 2019 17:40 CEST | Update | - |
| article html file updated | 3 May 2019 14:14 CEST | Update | - |
| article html file updated | 31 July 2017 06:58 CEST | Update | - |
| article html file updated | 3 July 2017 16:12 CEST | Original file | - |
| article xml uploaded. | 3 July 2017 16:11 CEST | Original file | https://www.mdpi.com/1996-1073/10/7/909/xml |
| article pdf uploaded. | 3 July 2017 16:11 CEST | Version of Record | https://www.mdpi.com/1996-1073/10/7/909/pdf |
